My computer is pure crap right now (integrated graphics) and it cannot play any games. Can you guys reccomend some parts? I already have a monitor, chassis, psu, optical drives, and hard drive. I need a motherboard, processor, ram, and gpu. I am just a casual gamer. I don't mind playing games on medium or low settings as long as they play well. The only really new game I play is Oblivion. Again, can you reccomend some parts that would fit my needs?

what kind of budget are we working with here? how many watt power supply do you have?

My psu is 450watts. My budget is $500

Well...

Motherboard:
http://www.newegg.com/Product/Product.asp?item=N82E16813131142
RAM:
http://www.newegg.com/Product/Product.asp?item=N82E16820145034
Processor:
http://www.newegg.com/Product/Product.asp?item=N82E16819115014
Video Card:
http://www.newegg.com/Product/Product.asp?item=N82E16814130084

that would upgrade you to a 2.0GHz Core 2 Duo, 2GB of cas4 800MHz DDR2, an SLI ready motherboard, and a 256MB 8600GTS video card... I'm not sure you can do too much better than that for $510.

Hi there. This is what I think it would be a good build for you. Especially the motherboard
CPU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115014

RAM:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231098

Mobo:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128048 --> This motherboard has support for DDR3 Memory when it becomes cheaper. So I think it's a worthy future proof upgrade.

Video Card:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102034 -->Good video card till DX10 Games are at their best.

If you want a good DX10 video card you should also upgrade your PSU.

The sum comes up to 464.96. You might want to make some research on eveyr part to make sure they fit in your case, are compatible etc.

Good luck! ^-^