Sorry, but there's some changes that really need to be made.
Sound Card - Creative Labs Sound Blaster Audigy SE
Not needed, especially the weak audigy. Since EAX went away, there's no reason to go dedicated sound card unless you are going for a high end studio-moitor specialty sound card like a M Audio Audiphile to record and play music and movies. For gaming, sound cards like are useless Audigy don't contribute anything.
Power Supply - Ultra X4 1050-Watt Modular Power Supply
Firstly 1050W is way too much unless you will be running 4x HD5870 Video cards in CrossfireX or 3 way SLI wih GTX480s. You'll be running at a much lower efficiency because you won't hit pthe sweet spot in the PSU loads.
Secondly, Ultra makes terrible PSUs check Johnnyguru or the Anandtech power supply forums for recommendations. Ultra is one of the lower tier of manufacturers, really very little different from generic brands. Corsair, Silverstone, Antec are excellent quality manufacturers. Ultra has always made system component frying crap.
Review:
http://www.hardocp.com/article/2009/11/24/ultra_x4_850w_1050w_power_supplies_review/8
The Ultra X4 line of power supplies represent something of a Phoenix rising from the ashes of the Ultra X2 750W Extreme Edition. Unfortunately, someone shot down that Phoenix before it could rise far enough from the X2's ashes to really signal a rebirth for Ultra.
As such, while not out right failures because they did not violate the ATX12v specifications or blow up, the X4 line is hardly the rebirth that Ultra needed and more like slightly warmed over leftovers on the day after Christmas.
HardOCP: X Fail rating
Case - XION Vantage Mid-Tower Case AXP100-001BK - ATX, mATX
No professional reviews of this product, but user reviews commonly complain that this case has low quality control and workmanship as well as being quite loud. Many complaints of cheap metal, unrolled steel edges, misaligned screw holes, shddy paint, manufacturing defects in things actually fitting together or even being attached at all, missing mounting components...
Skip it, unless you really need shiny blue lights and a big X, get a quality case.
Intel Core i7 950 Processor
Why? Either go for the i970 six core to justify the cost of a LGA 1366 motherboard or go for a i5 Quad core and a cheaper LGA 1156 board. Buying expensive + lower physical cores is a bad value. If you spend a little time to learn to overclock, 3.8-4 GHZ is not an issue for for i7 or i5 processors, so spend extra money on higher frequency is a waste, spend it on things you can't get for free like larger cache or more physical cores.
ASUS P6X58D Premium Motherboard
Not a bad choice, but not good value for money.
Western Digital WD2OEADS Cavair Green Hard Drive
Not bad, WD Caviar are quality hard drives, but you should focus on the Caviar Black series. Those are very, very good HDDS.
Honestly, return that stuff you already bought if you can, especially the PSU. A bad PSU will cause a system to under-perform, freeze and die. The Windows and DVD burner are fine, the others, there's much better choices out there.
Also TigerDirect used to have terrible service, I haven't dealt with them recently so it might have improved, but Newegg usually has lower prices and much, much better customer service if something goes wrong.
I'll outline 2 builds that would work better in a Group A and Group B form, A being an AMD build and B being an intel build. Either one will be massive overkill for what you want it to do, but you get a choice, more cores for better multitasking or more pure cpu grunt?
CPU
Intel Core i5-760
$209
Clock for clock, identical to 4 core Core i7 performance in applications with up to 4 threads (99% of apps) for much less money. Easily hits 3.8-4ghz when overclocked.
Motherboard
ASUS P7P55D-E Pro
$180
Excellent over-clocking board, excellent reliability, quality and lots of features too.
CPU cooler
Scythe SCMG-2100 Sleeve CPU Cooler
$40
Amazing cooler for the price
Ram
G.SKILL Ripjaws Series 8GB DDR1600 CAS9
$155 after EMCZYZR54 promo code
Great value, G.Skill makes very, very high quality enthusiast ram. The 1600mhz Cas 9 is $8 more than the 1333 Cas 9, so might as well go for 1600mhz.
Case
Antec Nine Hundred
$110
You can drop to an Antec 300 for about $60-$70 if you like, but the 900 offers a bit better airflow for lower temperatures. It's the most popular case for a very good reason, but the 300 is also a very, very good choice.
Power supply
CORSAIR Professional Series AX850 850W
$180
80+ gold efficiency rating, rock solid output voltages, ability to deliver stable power even if your home outlet comes out to as low as 90V, minimal noise and ripple to interfere with your pc components, barely audible when running, just has everything anyone needs in a power supply.
Hard Drive:
Western Digital Caviar Black 1TB 64mb Cache
$90
One of the fastest hard drives available
GPU
ZOTAC Geforce GTX 460 1gB
$200 after mail in rebate X 2 (Make sure to fill out 1 rebate for both cards to get $40 back)
Best value for the money gaming card right now, lifetime warranty also. Sli 2x GTX460 is faster than a single GTX480. Also while SLI GTX460 post very similar power draw for load when compared to a single GTX480, idle the GTX460s draw much, much less power (80+ watts) so it's actually more power efficient and cooler running too.
Total Cost:
Shipped
$1442.50
After Rebates
$1382.50
Adding your DVD burned and windows you kept
$1512.23
You could shave a little more money by returning the dvd drive and windows and buying it from newegg to get it squarely under $1500 if you really wanted to.
This system after building and a couple hours of overclocking would be more powerful than required to FF IV or World of Warcraft by a huge margin (You'd be looking more at Metro 2033 and Crysis at 1920x1080 playability here). The gaming experience will be more than smooth for those games at 1920x1080 much less 1280x720 unless FF IV come out and is absolutely terribly programmed and even then you'd have 2x the GPU power, 2x the ram recommended and once overclocked 150% of the CPU power recommended.
edit: forgot to mention, don't play a MMORPG at 1280x720. I used to play WoW at 1280x1024 and it's just too crowded. Once you get all the addons you need like threat meters and healbot or dps/heal meters, macros on the bars, deadly boss mod, atlasloot, etc, it becomes way too crowded. As a healer it becomes an incredible problem since healbot takes up so much screen real estate, GRID takes much more work to get right and never feels as natural as healbot and the regular click+keyboard layout is resistant and slow to effective raid healing (especially as a main healer) on real high level raids with a good guild. You'll just end up disappointing your friends since healing is so reaction sensitive and so easily leads to dying when you're not at 100% efficency. With tanking you can see more, but it still becomes an issue because of the massive amount of situational awareness you need to tank at high levels. DPS, you may be okay, but even then moving onto a 1920x1080 screen made a big difference with combo points and energy control, letting my cat finally hit the top spots in dps meters after I upgraded.
My experiences are all from a Druid though, which required much more finesse and work to get to the top level of play compared to the other more focused classes back in Burning Crusade.
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