I have a question for the group that probably has an easy answer?!! I have 3 PC's that are running XP HE and need to upgrade them to XP Pro as we are after getting a small server and it is running Microsoft Small Business Server software and of course HE is not a good choice to work with Small Business Server! My question is this...the pc's came preinstalled with HE and so if I just buy one copy of the upgrade will it work on all 3 machines or will the product key prevent me from doing this? I am trying to keep costs down and don't want to buy 3 separate upgrades if at all possible?!! See, I probably know the answer..but don't want to hear it!! Also, if anybody can recommend some web sites that I can pick up the upgrade cd's for cheap..that would help! Any info or pointers would help! Tnx in advance.