I cant go back to 32 bit xp because I lost my microsoft key number. I have an extra hard drive if I need 2, (its new with nothing installed yet) but never changed anything in the bios before. My mobo is MSI K9A2 CF with 790x chipset-AMD Phenom 9850 quad-core. The things that work are crazy fast. I ordered a 64 bit nic card that will be here tomorrow and I know how to install that. I cant get my printer to work, Im guessing it has a 32 bit driver,it's 3 years old.Im looking for the easiest way to get everything(all the normal stuff)up and working. I have installed ram and video cards, so I have some pc knowledge.