ADSI scripting template that runs the script against a computer selected from a listbox found on an HTML page. This script pings the relevant computer before trying to make a connection.

Visual Basic
Edit|Remove
On Error Resume Next

Set objExplorer = WScript.CreateObject _
    ("InternetExplorer.Application", "IE_")

objExplorer.Navigate "file:///C:\Scripts\listbox.htm"   
objExplorer.ToolBar = 0
objExplorer.StatusBar = 0
objExplorer.Width = 400
objExplorer.Height = 250 
objExplorer.Visible = 1             

Do While (objExplorer.Document.Body.All.OKClicked.Value = "")
    Wscript.Sleep 250                 
Loop 

strComputer = objExplorer.Document.Body.All.OKClicked.Value
objExplorer.Quit
Wscript.Sleep 250

If strComputer = "Cancelled" Then
    Wscript.Quit
End If

Set objShell = CreateObject("WScript.Shell")
strCommand = "%comspec% /c ping -n 3 -w 1000 " & strComputer & ""
Set objExecObject = objShell.Exec(strCommand)

Do While Not objExecObject.StdOut.AtEndOfStream
    strText = objExecObject.StdOut.ReadAll()
    If Instr(strText, "Reply") > 0 Then

        ' =====================================================================
        ' Insert your code here
        ' =====================================================================

        Set objComputer = GetObject("WinNT://" & strComputer & "")
        objComputer.Filter = Array("User")
        For Each objUser in objComputer
            Wscript.Echo objUser.Name
        Next

        ' =====================================================================
        ' End
        ' =====================================================================

    Else
        Wscript.Echo strComputer & " could not be reached."
    End If
Loop