Building a gaming pc [$700-800]

Alright my buddy said he'll build my pc if I get the parts. So if someone who knows about this stuff, list the best items I could get for a gaming pc and list every item I will need to purchase that would be much appreciated. Keep it between 700 and 800, thanks.

 

Use this guide..

http://i1002.photobucket.com/albums/af150/The_FalconO6/CurrentLogicalPCBuyingGuide/Guide.png

It doesn't include Ivy Bridge though, but someone else can make better suggestions,.