$1200 Gaming PC

No. Just no period.

The i7 isn't a good gaming CPU. It's too expensive.

The RAM you choose is slow. Really slow.

The GPU is a dying card. It's already been replaced by ATI, and it's replacement isn't a good gaming CPU. It will struggle badly at 1900x.

The PSU is not from a great brand. Stick to the major brands (Antec, Corsiar, Silverstone and SeaSonic).

The HDD is slower than cheaper drives.

The case is good, but a little small for the stuff you need.

CPU/Mobo: i5-750 and Asus P7P55D-E Pro $370
RAM: G.Skill Ripjaws 2x2 GB 1600 mhz CAS Latency 7 $110
GPU: HD 5870 $400
HDD: Samsung Spinpoint F3 1 TB $90
Case: HAF 922 $90
PSU: Corsair 750W $90 after rebate
Optical: Cheap SATA DVD burner $20
HSF (if OC): Coolermaster Hyper 212 Plus (out of stock at the moment, but usally $30)
OS: Windows 7 $65

Total: $1,265.

This would absolutely destroy your build. To make it cheaper, (if needed), you can easily make these changes and would have no noticeable impact on performance:

CPU/HSF: X4 955 and Coolermaster Hyper 212 Plus (usually about $185)
Mobo/GPU: Gigabyte GA-790XTA-UD4 and HD 5870 $485 after rebate

Total: $1,135.

Ouch, but I get good advice, thanks for your honesty.
Just, out of curiosity, what do you think the lifespan of the PC you suggest is? Not from a gaming standpoint, just from the standpoint of it will become frustrating to use (My laptop is at that point)

Thank you

You could also drop down from a 5870 to a 5850 and still have a very good system for $100 less.

Either of MadAds builds will be good for 3-7 years, depending on how picky you are about having the "latest and greatest". Given you have been using a cruddy laptop, probably the long side of that range (5-7 years).

Oh, thank you both then, I appreciate your help immensely.
Last PC I built exploded after 3 years and I was nervous about a new one.
I'll consider the 5850, because if it's cheaper then I can afford a second one faster and crossfire them.
Thank you again.