I have a friend who wants to buy a new pc for gaming purposes. He said he wanted to have a pc that could play World Of Warcraft at resonable settings with very good frame rate. At first I said it was simple because World of Warcraft doesn't demand much of the computer. However, he said his budget was only 400 dollars. i know you guys are knowledgble in constructing a new computer. Can you suggest some sites? Can you tell me what is essential for a gaming comp? What sacrifices should I make for a cheap pc?