Yeah,that's what I was concerned with. I can borrow a friends vista but I don't want to spend money on the machine, and then buy a hard disc only to find it wont work. The machines a good buy, bur not that good. But what would you do if you totally crashed your HDD and you didn't have a system disc? Isn't that what a coa is for? Also, tell me about Linux-can you access windows programs and surf the web? And can you access websites like Youtube?