A friend of mine wanted to upgrade his machines at his office so he went to dell's website and bought 15 dimension 8400 machines with windows home on them. Well...he uses active directory at the office and did not realize that home did not support active directory. To remedy the situation he wants to either ship the machines back to buy xp pro computers, buy an upgrade, or completly get rid of the active directory all together. There are 15 machines. In everyones opinion, what is the best method to take care of this?