Salutations and thanks, I recently built a new computer with: AMD 6400+ (zalman 9700) Corsair XMS2 pc 6400 dual channel 2 1 gigs sticks M2N32-Sli Deluxe wifi edition 250g IDE 2 msi 8800 ultras Asus sata drive I first only installed the IDE drive with vista 64 bit and i had quite A few errors, such as sound card drivers and not being able to install 4 gigs of the same ram. I decided to take my old hdd andonly install that with xp but I can't authenticate it. I've got one extra sata hdd. I built this as a Christmas gift but I dont want to get rid of all the music on the old hdd. What should I do? Buy vista 32 bit and install that'd on the blank hdd, its a gift so I need to do this before Xmas time. Thanks!!