Opinion on a low budget gaming build

[xAPOCALYPSEx]

Hello
I need to build a low budget gaming build, and I need to know for a fact if all this will fit fine, and I would like to have opinions or suggestions. This build is primarily for playing older/low resource games, (BFME2, Men of War, World of Warcraft, and other MMORPGs), and I am hoping it will play newer MMO's such as Diablo 3 when it comes out and maybe Warhammer 40k. The person who will be recieving this build almost never plays First Person Shooters.
Build:

Thanks in advance.
The budget is about $600, and after the mail-in rebates, this already goes over it by $10.

 

[AMW1011]

I would change:

PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007

case:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811147144

CPU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103652&cm_re=phenom_ii_x3-_-19-103-652-_-Product

GPU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814131354&cm_re=5750-_-14-131-354-_-Product

RAM:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231253

 

[xAPOCALYPSEx]

thank you for your input, I was actually looking at the RAM, CPU, and Case before, but I couldn't quite get it to fit the budget. (and I still didn't, but what the hell?) Thanks, and I will greatly consider those as replacements

 

[AMW1011]

Yeah 2GB of RAM will really hold you back any more and you can't go wrong with the Phenom II X3 720, and if your lucky you can unlock to a full quadcore.

 

[batuchka]

$584AR?