Ok. I've certainly not changed "security provider" at least not that i know of. I usually change some system driver letters at some of my partitions but that has never affected anything before. Btw, i use Microsoft Virtual PC to test the disc before i burn it. Therefore it shouldnt be affected by any registry changes in my primary xp install. Nah, i think this is just a Virtual PC issue, and i'll try to use this as a primary installation. Thanks