How can I verify the completion of an .msi installation?

Hi experts.

I am developing an html application that will be used to install a number of different programs.  On a page will be a list of programs that will need to be installed.  I have already used a jscript that checks for specific registry entries, determining if any of the programs have already been installed.  If a program has been installed, a check mark image is made visible next to the name of the program.

If a program has not been installed, the user will see an install button.  Clicking on that will then run the normal installer (usually an .msi).  After the installer completes successfully, I would like to put a check mark next to the name of the program.  How can I verify within the hta file that the external installer has completed?  Is there a script I can run that will wait for a process to complete? I would like to stick with jscript, but any solution that accomplishes this will do.

Thanks!!!
pwi11Asked:
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jkrConnect With a Mentor Commented:
Check out http://www.microsoft.com/technet/scriptcenter/resources/scriptshop/shop0805.mspx#EOE ("Using Win32_ProcessStartTrace to Handle Process Events") and in particular the paragraph

Listing 3: Asynchronously monitor specific processes with Win32_ProcessStartTrace

On Error Resume Next

strComputer = "."
arrTargetProcs = Array("calc.exe", "notepad.exe", "freecell.exe")

Set SINK = WScript.CreateObject("WbemScripting.SWbemSink","SINK_")

Set objWMIService = GetObject("winmgmts:" _
 & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")
objWMIService.ExecNotificationQueryAsync SINK, _
 "SELECT * FROM Win32_ProcessStartTrace"

Wscript.Echo "Waiting for target processes ..."

Do
   WScript.Sleep 10000
Loop

'******************************************************************************

Sub SINK_OnObjectReady(objLatestEvent, objAsyncContext)

For Each strTargetProc In arrTargetProcs
  If LCase(objLatestEvent.ProcessName) = LCase(strTargetProc) Then
    Wscript.Echo VbCrLf & "Process Name: " & objLatestEvent.ProcessName
    Wscript.Echo "  Process ID: " & objLatestEvent.ProcessID
    Wscript.Echo "  Time: " & Now
  End If
Next

End Sub


seems to do what you want.
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