Have a look at these links there might be a solution: http://www.gnutellaforums.com/showth...9587#post99587 & also this http://support.microsoft.com/default...2Futility2.asp There may be an issue with installshield. Perhaps you can see if there's an update to the version you have. http://consumer.installshield.com/ & also http://consumer.installshield.com/kb.asp?id=Q108440 Apparently there's presently an issue with XP SP2 causing issues with installshield.