How is this build for $720+

@r0aringdrag0n--You really didn't try very hard to help this guy out, did you?

CPU+GPU: That's a pretty lousy combo. The Phenom II x4 955BE (same as a 965 since the multiplier's unlocked) is regularly $99 on deals. The 6950 1GB is regularly $200 after rebate. If you've got a Micro Center nearby, you could pick up an i5-2500K and 6950 for $15 less.

DVD: simple enough, good price. Go ahead and buy it now (if you don't have an old one sitting around. I've got several.).

Case: Not that amazing for $60, but it'll do. If I were on a budget like you, I'd get a Thermaltake V4 for $40: http://www.amazon.com/gp/product/B003SNJA8O/sr=8-1/qid=...
An Antec 300 is also only $45 on Newegg.com

HDD: No, that's terribly overpriced. Get a 120GB SSD for $20 more.

Mobo: That one's fine if you're comfortable saying you'll stick with Radeons. If you're not, this is a solid SLI compatible board: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

PSU+RAM: That's a solid combo. However, a 600W PSU is useless with a 6950 1GB. It's not big enough to run two and one would do fine on a 500W. I suggest a $38 8GB (2x4GB) 1600CL9 DDR3 kit (sign up for Newegg's emails) and a $60 XFX 650W SLI PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Any Antec, Corsair, Seasonic, or XFX PSU is good enough.

My total budget for you...
CPU: $100
Mobo: $87
GPU: $200
PSU: $65
Case: $40
RAM: $40
DVD: $20
HDD: $0 Reuse old one

TOTAL: $552

I'd use the extra money to buy a 120GB SSD. Then add an HDD later when you run low on space. You can also find deals on external hard drives with 3.5" ones inside still. Keep an eye on slickdeals.net.