Budget Range: Currently at 600; I'd like to keep it there, but I'll go up to 700 After Rebates if the bump in capability justifies the extra cost
System Usage from Most to Least Important: Mainly being built because my old junker couldnt handle Starcraft II. I'd also like to be able to play the new Diablo whenever it drops; other than that, web surfing
Parts Not Required: keyboard, mouse, monitor, speakers, OS (I'll have Win 7 Home)
Preferred Website(s) for Parts: None, but they must ship APO (ie newegg)
Country of Origin: US, but APO
Monitor Resolution: 1280x1024 up to 1600x1200
Additional Comments: I dont need much more than what SC II requires, but I'd like upgrade potential for the future. I didnt include any combos in the price since I wont be buying for a few weeks yet.
Based on what I've read around these forums, here is what my current build looks like (keep in mind I'm a first time builder, please critique/change freely if I'm doing something dumb!):
It uses similar parts that you have here with some improvements and will cost around $600. It will also play SCII on ultra settings really well (I can vouch for that). Also, you don't have to buy a CPU cooler/ thermal compound as the processor will come with a stock cooler, and thermal grease already applied to it. That being said, if later on you want to do some serious overclocking then another CPU cooler maybe useful. Hope this helps!
As the build I gave you above uses a GeForce GTS 450 graphics card, I would suggest subbing in the Radeon HD 5770 as you chose, this will make the cost more around ~625ish. Up to you though.
I would definitely recommend a better graphics card. Either the HD 6850 or the GTX 460 1GB versioon. Look for rebates and combo deals and you should be able to get the 460 for around $160ish. Also, I would grab the phenom X3 instead of the Athlon X3. Same price and you get the L3 Cache which will come in handy at times. Finally, grab the samsung spinpoint F3 as it is a faster hard drive.
As for power supply, I recommend this one by corsair. It is only 70 after rebate, has a 10% promo code and has a single 12V rail like the rosewill. Also, the corsair has a few more connectors but if you don't need them, it could just clutter up your case. http://www.newegg.com/Product/Product.aspx?Item=N82E168...