Need sccm task to check for running process or install app

I have to setup a task to run if a particular application or process is installed.  Is it possible to configure a task to check for a process or install application? Is so, how is it done?
rdefinoAsked:
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cantorisCommented:
I do this sort of thing with a bit of VBScript.
The package launches the script which uses WMI to check for the running process and from there makes the decision whether or not to do the next thing.

For a more complex example, I've done packages where an app needs to be upgraded but the user might be running it.  If it's not running, the script does the upgrade by calling the executable and passing silent parameters.  If the task is already running then it alerts the user, asking them to close the app at their convenience.  It then rechecks every ten seconds to see if it can run the upgrade and then afterwards tells the user all is OK.  I also did one that would remind the user every ten minutes if they ignored the request.
Of course there's always at least one user who closes the app and then shuts down, breaking the scripts flow - unless you have a re-run package on failure set to try again on next boot.
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rdefinoAuthor Commented:
How would I do it a vb script in sccm 2012?
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cantorisCommented:
I don't have practical experience of SCCM 2012.

My more complex examples of VBScript for this sort of thing have used a couple of hundreds of lines of code to include full error-trapping and return codes etc.

For example, here's my function for checking if a process is running.  It returns True or False for if the named process is active or 666 if the WMI call failed!  The first three lines are defined elsewhere outside the function.
Const WBEMFLAGRETURNWHENCOMPLETE = 0
Const DEADWMI = 666
Set objSWbemServices = GetObject("winmgmts:{impersonationLevel=impersonate}!\\.\root\cimv2")

Function fnIsRunning(ByVal strProcessName)
 ' Is the specified process running?  Returns boolean.
	On Error Resume Next
	strWQLQuery = "SELECT Name FROM Win32_Process WHERE Name='" & LCase(strProcessName) & "'"
	Set colProcesses = objSWbemServices.ExecQuery(strWQLQuery,, WBEMFLAGRETURNWHENCOMPLETE)
	If Err.Number = 0 Then
		fnIsRunning = (colProcesses.Count > 0)
	Else
		fnIsRunning = DEADWMI
	End If
End Function

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