Optimize your code like this:

Code:

;Check users desktop for CIS install

if ingroup("nw2_CISinstall") 
	if NOT exist("c:\CISinst.txt")
		Select
		Case @inwin = 1
			copy "S:\CIS\CISInst.txt" "C:\"
			copy "S:\CIS\Desktop\*.*" "C:\Documents and Settings\All Users\Desktop" /s
			copy "S:\CIS\Applic\*.*" "C:\Program Files" /s
				
		Case @inwin = 2
			copy "S:\CIS\CISInst.txt" "C:\"
			copy "S:\CIS\Desktop\*.*" "C:\Windows\Desktop" /s
			copy "S:\CIS\Applic\*.*" "C:\Program Files" /s

		EndSelect
	Endif
Endif