WINDOWS 7 - will at some point prove to be a total disaster. Choose a Operating System such as Ubuntu. I have 1 laptop running on Vista, I don't like it alot, only feature I do like is, instead of searching through all your programs on start menu, there is a fast option to type program name in. Apart from that, as far as the current selection of Window's O/S, XP is most prob's the favourable choice of a large number of repair PC's, as there are little chances of problems occuring, compared to Vista's list of faults. What is YOUR view on my personal choice of OS and decide for yourself on what OS would be most suitable for you