I am looking to invest in a windows gaming computer. I was thinking about buying a iMac computer but it seems a PC is going to be my better option. I am a sophomore in high school and have almost no experience with building computers or the components needed. I have about a $2000 budget and am looking for any advise on what I should start out with and build with. I need to be able to run games like WoW and SC2. So where and what should I start out with?