Hello, I got a new comp after Windows XP Installation fried my old comp, so I'm going to get Windows Vista Home Premium UPGRADE (LOL bad idea huh if my last one fried from XP?) My system specs are... (I got this PC for 300$) Dell Dimension 4600i ~2.80 GHz Processor, Pentium 4 with Hyperthreading 400 GB SATA Hard Drive 1 GB of RAM. My GFX Card can use Direct X 9.0c well and can play World of Warcraft on max graphical settings however 'tis a little laggy unless I bring it down a bit. I plan to use Aero. I'm sure it'll run, but will it run efficiently? I was thinking of getting 2-3 GB of RAM or something but I don't think anything available on the entire internet needs 2-3 GB. I think the most you need is 512 with an occasional recommendation of 1024/1 GB.