:confused: ... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits

XP doesn't have this ability. The user has to launch the application using RunAs. I would suggest, next time, you develop your application under a normal User account, the same as the type that's going to run your application, and not as an administrator. This forces you to take into consideration the restictions the user has to access certain things, like the HKEY_LOCAL_MACHINE hive in the registry. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007