My mom is wanting a computer at her house for my son to play games on. Im thinking it will probably be cheaper to build a good gaming system than to try to by a new one. No internet use, no document or any other program use, just games. I need to build it as cheep as possible. Can someone give me some ideas on what needs to go into something like this? Could anyone out there possibly build something like this or mybe just have some of the parts?