It needs to be done like this....

Code:

If ComputerInGroup(t202)
use t: "\\tessende-llser\wintoets"
Endif 


Function ComputerInGroup($group,optional $Domain)
	Dim $oGrp
	if not $domain		$domain=@domain		endif
	$oGrp = GetObject("WinNT://" + $domain + "/"  + $group + ",group" )
	if @error	exit 1		endif

	if $oGrp.IsMember("WinNT://" + $domain + "/"  + @wksta + "$$" )
		$ComputerInGroup=1
	else
		$ComputerInGroup=0
		endif
	endfunction


If you don't add the function in the code, then it has nothing to reference against, and it wont work.
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