Hi, Before i buy this version of windows can i ask a few questions just to make sure it can do what i want it to do? 1.I want to hook the computer up to a router so the other computers in that router can get access to the files on each other. 2. Are there any performance increases with better versions? 3. I read that it is about the same level as xp home, would you say that is right? Meaning vista prem would be xp pro?