You can check the registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\HotFix

For example:

Code:

$KBPath='\\server1\patches\KB835732_XP.exe'



If KeyExist('HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\HotFix\KB835732')=0

          

   If Exist ('%tmp%\KB835732_XP.exe')<>1

	Shell '%comspec% /c xcopy $KBPath %tmp% /c /h /r'

   EndIf

   Shell '%comspec% /c %tmp%\KB835732_XP.exe'

Endif
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Co