I'm going to build a new PC and I have a question on the storage device. I will already be purchasing an HDD, but I also want to use my old HDD because it would be such a hassle to transfer those files to something else and blahblahblah. Is it possible to install both the new HDD and the old HDD in the computer and also, should I delete the files for windows 7 that are on my old HDD because the old HDD has 32 bit windows 7 and the new one will have 64 bit installed. Should I delete the windows on the old HDD? Will it interfere with the new one? Help!