Tout est dans le sujet !
Quel composant utiliser ?
 
Merci d'avance

Pas besoin de composant, il faut utiliser les apis winsock :
 
Option Explicit
 
Public Const IP_STATUS_BASE = 11000
Public Const IP_SUCCESS = 0
Public Const IP_BUF_TOO_SMALL = (11000 + 1)
Public Const IP_DEST_NET_UNREACHABLE = (11000 + 2)
Public Const IP_DEST_HOST_UNREACHABLE = (11000 + 3)
Public Const IP_DEST_PROT_UNREACHABLE = (11000 + 4)
Public Const IP_DEST_PORT_UNREACHABLE = (11000 + 5)
Public Const IP_NO_RESOURCES = (11000 + 6)
Public Const IP_BAD_OPTION = (11000 + 7)
Public Const IP_HW_ERROR = (11000 + 8)
Public Const IP_PACKET_TOO_BIG = (11000 + 9)
Public Const IP_REQ_TIMED_OUT = (11000 + 10)
Public Const IP_BAD_REQ = (11000 + 11)
Public Const IP_BAD_ROUTE = (11000 + 12)
Public Const IP_TTL_EXPIRED_TRANSIT = (11000 + 13)
Public Const IP_TTL_EXPIRED_REASSEM = (11000 + 14)
Public Const IP_PARAM_PROBLEM = (11000 + 15)
Public Const IP_SOURCE_QUENCH = (11000 + 16)
Public Const IP_OPTION_TOO_BIG = (11000 + 17)
Public Const IP_BAD_DESTINATION = (11000 + 18)
Public Const IP_ADDR_DELETED = (11000 + 19)
Public Const IP_SPEC_MTU_CHANGE = (11000 + 20)
Public Const IP_MTU_CHANGE = (11000 + 21)
Public Const IP_UNLOAD = (11000 + 22)
Public Const IP_ADDR_ADDED = (11000 + 23)
Public Const IP_GENERAL_FAILURE = (11000 + 50)
Public Const MAX_IP_STATUS = 11000 + 50
Public Const IP_PENDING = (11000 + 255)
Public Const PING_TIMEOUT = 1000
Public Const WS_VERSION_REQD = &H101
Public Const WS_VERSION_MAJOR = WS_VERSION_REQD \ &H100 And &HFF&
Public Const WS_VERSION_MINOR = WS_VERSION_REQD And &HFF&
Public Const MIN_SOCKETS_REQD = 1
Public Const SOCKET_ERROR = -1
 
Public Const MAX_WSADescription = 256
Public Const MAX_WSASYSStatus = 128
 
Public Type ICMP_OPTIONS
    Ttl                As Byte
    Tos                As Byte
    Flags           As Byte
    OptionsSize     As Byte
    OptionsData     As Long
End Type
 
Dim ICMPOPT As ICMP_OPTIONS
 
Public Type ICMP_ECHO_REPLY
    Address         As Long
    status          As Long
    RoundTripTime   As Long
    DataSize        As Integer
    Reserved        As Integer
    DataPointer     As Long
    Options         As ICMP_OPTIONS
    Data               As String * 250
End Type
 
Public Type HOSTENT
    hName As Long
    hAliases As Long
    hAddrType As Integer
    hLen As Integer
    hAddrList As Long
End Type
 
Public Type WSADATA
    wVersion As Integer
    wHighVersion As Integer
    szDescription(0 To MAX_WSADescription) As Byte
    szSystemStatus(0 To MAX_WSASYSStatus) As Byte
    wMaxSockets As Integer
    wMaxUDPDG As Integer
    dwVendorInfo As Long
End Type
 
 
Public Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
 
Public Declare Function IcmpCloseHandle Lib "icmp.dll" _
   (ByVal IcmpHandle As Long) As Long
   
Public Declare Function IcmpSendEcho Lib "icmp.dll" _
   (ByVal IcmpHandle As Long, _
    ByVal DestinationAddress As Long, _
    ByVal RequestData As String, _
    ByVal RequestSize As Integer, _
    ByVal RequestOptions As Long, _
    ReplyBuffer As ICMP_ECHO_REPLY, _
    ByVal ReplySize As Long, _
    ByVal Timeout As Long) As Long
     
Public Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long
 
Public Declare Function WSAStartup Lib "WSOCK32.DLL" _
   (ByVal wVersionRequired As Long, _
    lpWSADATA As WSADATA) As Long
     
Public Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long
 
Public Declare Function gethostname Lib "WSOCK32.DLL" _
   (ByVal szHost As String, _
    ByVal dwHostLen As Long) As Long
     
Public Declare Function gethostbyname Lib "WSOCK32.DLL" _
   (ByVal szHost As String) As Long
   
Public Declare Sub RtlMoveMemory Lib "kernel32" _
   (hpvDest As Any, _
    ByVal hpvSource As Long, _
    ByVal cbCopy As Long)
 
 
Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
(hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Public Function GetIPAddress(strMachine As String) As String
  '  Dim sHostName   As String * 256
    Dim lpHost      As Long
    Dim HOST        As HOSTENT
    Dim dwIPAddr    As Long
    Dim tmpIPAddr() As Byte
    Dim i           As Integer
    Dim sIPAddr     As String
     
''    If Not SocketsInitialize() Then
''        GetIPAddress = ""
''        Exit Function
''    End If
''    If gethostname(sHostName, 256) = SOCKET_ERROR Then
''        GetIPAddress = ""
''        MsgBox "Windows Sockets error " & Str$(WSAGetLastError()) & _
''            " has occurred. Unable to successfully get Host Name."
''            SocketsCleanup
''        Exit Function
''    End If
     
    strMachine = Trim$(strMachine)
    lpHost = gethostbyname(strMachine)
     
    If lpHost = 0 Then
        GetIPAddress = ""
''        MsgBox "Windows Sockets are not responding. " & _
''            "Unable to successfully get Host Name."
''        SocketsCleanup
        Exit Function
    End If
     
    CopyMemory HOST, lpHost, Len(HOST)
    CopyMemory dwIPAddr, HOST.hAddrList, 4
    ReDim tmpIPAddr(1 To HOST.hLen)
    CopyMemory tmpIPAddr(1), dwIPAddr, HOST.hLen
 
    For i = 1 To HOST.hLen
        sIPAddr = sIPAddr & tmpIPAddr(i) & "."
    Next
     
    GetIPAddress = Mid$(sIPAddr, 1, Len(sIPAddr) - 1)
''    SocketsCleanup
End Function
 
Public Function GetStatusCode(status As Long) As String
 
   Dim msg As String
 
   Select Case status
      Case IP_SUCCESS:                  msg = "ip success"
      Case IP_BUF_TOO_SMALL:            msg = "ip buf too_small"
      Case IP_DEST_NET_UNREACHABLE:  msg = "ip dest net unreachable"
      Case IP_DEST_HOST_UNREACHABLE: msg = "ip dest host unreachable"
      Case IP_DEST_PROT_UNREACHABLE: msg = "ip dest prot unreachable"
      Case IP_DEST_PORT_UNREACHABLE: msg = "ip dest port unreachable"
      Case IP_NO_RESOURCES:             msg = "ip no resources"
      Case IP_BAD_OPTION:               msg = "ip bad option"
      Case IP_HW_ERROR:                 msg = "ip hw_error"
      Case IP_PACKET_TOO_BIG:           msg = "ip packet too_big"
      Case IP_REQ_TIMED_OUT:            msg = "ip req timed out"
      Case IP_BAD_REQ:                  msg = "ip bad req"
      Case IP_BAD_ROUTE:                msg = "ip bad route"
      Case IP_TTL_EXPIRED_TRANSIT:   msg = "ip ttl expired transit"
      Case IP_TTL_EXPIRED_REASSEM:   msg = "ip ttl expired reassem"
      Case IP_PARAM_PROBLEM:            msg = "ip param_problem"
      Case IP_SOURCE_QUENCH:            msg = "ip source quench"
      Case IP_OPTION_TOO_BIG:           msg = "ip option too_big"
      Case IP_BAD_DESTINATION:          msg = "ip bad destination"
      Case IP_ADDR_DELETED:             msg = "ip addr deleted"
      Case IP_SPEC_MTU_CHANGE:          msg = "ip spec mtu change"
      Case IP_MTU_CHANGE:               msg = "ip mtu_change"
      Case IP_UNLOAD:                   msg = "ip unload"
      Case IP_ADDR_ADDED:               msg = "ip addr added"
      Case IP_GENERAL_FAILURE:          msg = "ip general failure"
      Case IP_PENDING:                  msg = "ip pending"
      Case PING_TIMEOUT:                msg = "ping timeout"
      Case Else:                        msg = "unknown  msg returned"
   End Select
   
   GetStatusCode = CStr(status) & " : " & msg
   
End Function
 
 
Public Function HiByte(ByVal wParam As Integer)
 
    HiByte = wParam \ &H1 And &HFF&
 
End Function
 
 
Public Function LoByte(ByVal wParam As Integer)
 
    LoByte = wParam And &HFF&
 
End Function
 
 
Public Function DoPing(szAddress As String, ECHO As ICMP_ECHO_REPLY) As Long
 
   Dim hPort As Long
   Dim dwAddress As Long
   Dim sDataToSend As String
   Dim iOpt As Long
   
   sDataToSend = "Echo This"
   dwAddress = AddressStringToLong(szAddress)
   
   hPort = IcmpCreateFile()
   
   If IcmpSendEcho(hPort, _
                   dwAddress, _
                   sDataToSend, _
                   Len(sDataToSend), _
                   0, _
                   ECHO, _
                   Len(ECHO), _
                   PING_TIMEOUT) Then
   
        'the ping succeeded,
        '.Status will be 0
        '.RoundTripTime is the time in ms for
        '                  the ping to complete,
        '.Data is the data returned (NULL terminated)
        '.Address is the Ip address that actually replied
        '.DataSize is the size of the string in .Data
         DoPing = ECHO.RoundTripTime
    Else
        DoPing = ECHO.status * -1
    End If
                       
   Call IcmpCloseHandle(hPort)
   
End Function
   
 
Function AddressStringToLong(ByVal tmp As String) As Long
 
   Dim i As Integer
   Dim parts(1 To 4) As String
   
   i = 0
   
  'we have to extract each part of the
  '123.456.789.123 string, delimited by
  'a period
   While InStr(tmp, "." ) > 0
      i = i + 1
      parts(i) = Mid(tmp, 1, InStr(tmp, "." ) - 1)
      tmp = Mid(tmp, InStr(tmp, "." ) + 1)
   Wend
   
   i = i + 1
   parts(i) = tmp
   
   If i <> 4 Then
      AddressStringToLong = 0
      Exit Function
   End If
   
  'build the long value out of the
  'hex of the extracted strings
   AddressStringToLong = Val("&H" & Right("00" & Hex(parts(4)), 2) & _
                         Right("00" & Hex(parts(3)), 2) & _
                         Right("00" & Hex(parts(2)), 2) & _
                         Right("00" & Hex(parts(1)), 2))
   
End Function
 
 
Public Function SocketsCleanup() As Boolean
 
    Dim X As Long
     
    X = WSACleanup()
     
    If X <> 0 Then
        MsgBox "Windows Sockets error " & Trim$(Str$(X)) & _
               " occurred in Cleanup.", vbExclamation
        SocketsCleanup = False
    Else
        SocketsCleanup = True
    End If
     
End Function
 
 
Public Function SocketsInitialize() As Boolean
 
    Dim WSAD As WSADATA
    Dim X As Integer
    Dim szLoByte As String, szHiByte As String, szBuf As String
     
    X = WSAStartup(WS_VERSION_REQD, WSAD)
     
    If X <> 0 Then
        MsgBox "Windows Sockets for 32 bit Windows " & _
               "environments is not successfully responding."
        SocketsInitialize = False
        Exit Function
    End If
     
    If LoByte(WSAD.wVersion) < WS_VERSION_MAJOR Or _
       (LoByte(WSAD.wVersion) = WS_VERSION_MAJOR And _
        HiByte(WSAD.wVersion) < WS_VERSION_MINOR) Then
         
        szHiByte = Trim$(Str$(HiByte(WSAD.wVersion)))
        szLoByte = Trim$(Str$(LoByte(WSAD.wVersion)))
        szBuf = "Windows Sockets Version " & szLoByte & "." & szHiByte
        szBuf = szBuf & " is not supported by Windows " & _
                          "Sockets for 32 bit Windows environments."
        MsgBox szBuf, vbExclamation
        SocketsInitialize = False
        Exit Function
         
    End If
     
    If WSAD.wMaxSockets < MIN_SOCKETS_REQD Then
        szBuf = "This application requires a minimum of " & _
                 Trim$(Str$(MIN_SOCKETS_REQD)) & " supported sockets."
        MsgBox szBuf, vbExclamation
        SocketsInitialize = False
        Exit Function
    End If
     
    SocketsInitialize = True
         
End Function

TOUT CA POUR UN PING ? ? ? ? ?

Merci
Je suppose que y'a quand même quelques lignes de codes que je peut virer non ?

Pour info, y'a une version un peu plus courte sur http://www.vbfrance.com/article.asp?Val=680

ca y est.. tu t'y met enfin a ton truc