Can I delete the windows.old files that were left when I installed Vista? They take up a lot of room and since they are all xp files and you can't access anything in them, I just thought it would be nice to get rid of them. We did a complete install to Vista from xp, not an upgrade, but it still said it was going to leave those old files, and did leave them. Anyone know if there would be trouble if I ditched them and the safest way to do it if I can?? Thanks