You probably do not need to do this, but you can open OneCare and you'll find the options to disable the virus and spyware protection and the firewal on their own tabs. The need to disable security is generally no longer needed. The manufacturer is likely advising it out of ignorance or the simple desire to remove all variables that could cause problems with a buggy installer. -steveMicrosoft MVP Windows Live / Windows Live OneCare & Live Mesh Forum Moderator