I am running a home network that runs beautifully with 3 machines, 2 xp home and 1 xp pro. I am in the middle of changing computers.I have not heard great things about vista. Even a friend of mine who runs a networking business has told me that he has had to downgrade 12 business customers in the last few months from vista to xp because no one can figure out how to make everything sync together with vista.Can anyone tell me what is the advantage of upgrading versus buying machines and staying with xp.