As far as i've been told (im no expert, or even close) that it does everything that your home edition XP would do, except professional is more for a business surronding. Networking multiple computers, and having added security to the network. I used to have home edition, and i got a free copy of Professional SP2, I actually reformated my computer and am trying it out right now. It seems all about the same, except for maybe not as user-retarded like home edition saying "this is a computer ... ka dirk a derrrrr "
