Second Build..

Looks great except rather than buying 2x2Gb(x2) you should go with 2x4Gb it will be slightly faster. Instead of a Geforce card you should get a Radeon HD 6950 for the same price so that if you ever want to go Crossfire it will be fine, and the 6950 ranks higher than the 470 on the hierarchy chart.

Quick question, what resolution do you plan on playing this at, if your only going to run wow at 1280x1024 then a 570-6970 will pump plenty out. I dont like to recommend specific cards but price for performance the game seems to run slightly better on nvidia cards. I recommend you get the 570 and reduce your ssd to a 60 gig model and get a standard hdd for normal storage. Much better performance scenario.

WoW seems to show a pretty strong preference for nVidia cards, but Martin9630 has a point about Crossfire. If you think you'll ever want two GPUs, then get an AMD card like a HD6870. In your place, and preferring just one card, I'd probably choose a GTX560 Ti.
Also, the X6 CPUs show no advantages for games, and sometimes worse performance than the X4s. Check out the 965BE instead.

Another option entirely, which would give you better performance overall, plus the SLI (as well as Crossfire) option, would be to consider a Sandy Bridge build. What is your budget?

You want an intel/NVIDIA build for your usage and price range.

CPU: Core i5 2500k ($225)
MOBO: ASUS P8P67 PRO ($190)
RAM: G.SKILL Ripjaws Series 8 GB, 1600 MHz, CAS 7 ($150)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
GPU: GTX 570 ($290 AR)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
PSU: XFX 850 Watt ($110 AR)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
SSD: Wait for Vertex 3's ($250)
HDD: Samsung Spinpoint F3 1 TB ($65)
Case: HAF 922 ($100)

Total: $1380

You could get RAM with higher latency to save money, but I hear modeling applications like lower latency RAM.

You could step the GTX 570 down to the GTX 560 Ti and still get performance better than a 470. Also, the Intel platform will support Crossfire or SLI, so if you choose to get a 6970, you can still upgrade to a dual-card configuration in the future.

If you don't plan to SLI/Crossfire, drop the PSU to XFX Black Edition 650 Watt.

Intel's i5 2500k beats the Phenom II x6 in almost every benchmark imaginable:
http://www.anandtech.com/bench/Product/146?vs=288

My Budget is $2,200
for WoW i plan on playing it by 1920 x 1080 and having the other monitor for browsing the web.
if intel is the way to go ill happily switch. i wanna keep the 2 monitors and the case tho.

If your budget is $2,200, why don't you just tweak the System Builder Marathon $2000 PC to your liking?   I'm sure lots of people on THG have opinions about that build.  

Oh. $2200? Add gtx 580 (there's a Galaxy brand card that's $460 after rebate on newegg), and get an I7 2600k.

I'm planning on buying the parts in about a month.