Hi all, my son keeps asking me to buy him a new hard drive for Xmas, because his computer is running out of room and he is looking to be buying the new world of warcraft expansion coming out. So I was inside Best buy and I noticed there was both External and Internal Hard drives for sale, So im wondering what is the different? If I could get one of the USB external hard drives I feel it would be a lot easier for me and him to install instead of ripping open the computer case and trying to figure out how to install one. But would a external hard drive work for this? And how would I go about installing it? Any links to items I should check out would really help me out also thanks all for the help. PS. His computer currently is running Windows XP home and has a 120gb HDD inside it, I was looking for something with 200-320gb to buy for him, thanks again.