I have also been using an HD TV as my monitor as i have acquired 2 over the last couple of months. It's 26 in. and serves it's purpose. I really don't know anymore since it's been a while, but i have always used AMD computers... Any help would be appreciated as I don't even know where to begin anymore.
Approximate Purchase Date: ASAP
Budget Range: ~ $500
System Usage: Photoshop/Design and gaming (AION, Starcraft 2, CIV 5)
Absolutely NO to the PSU! That is not the place to skimp, as your entire system is dependent on it. A modern PSU has full range active PFC (no little voltage switch) and 80+ certification. Antec, Seasonic, Corsair, Enermax, and XFX are among the quality brands. You would be fine with 500W.
Since there is room in your budget, I'd choose a X4 955BE; 2/3 of the games you list are very CPU dependent, as are your other uses.
For 1080p resolution, you might prefer a 1GB GTX460.
Having replaced a couple of them not long ago due to failure, I've become a little leery of Biostar mobos. I tend to prefer ASRock or Asus, then Gigabyte.
Thumbs down to any OCZ Ram, I have not heard anything good about them. Stick with the ram you chose or go with G.Skill ram. Overall go with same case (or the other one) and the new OCZ p.s.u you chose then you'll be good
The OCZ Fatal1ty should be acceptable. The Raidmax=Chokemax, another baddie.
I believe that Mushkin makes good RAM. I also like G.Skill and A-Data.
Upgrade the CPU to the X4 955BE. For future-resistance, choose a mobo with USB 3.0 and SATA 6.0Gb/sec like this ASRock, now reduced: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
That's a nice mobo; I've considered buying one for myself. HOWEVER, note that it is ATX, so you'll need to change your case to fit.
Edit: Also note that it has two PCIE x16 slots for Crossfire. You can use a single nVidia card, but if you'd ever consider running two cards, switch your GPU to a HD5750 or HD5770.
And, for your specific uses, the X4 955BE will provide visibly better performance. Here's a comparison (although using the slightly faster X3 450, as the 445 is not listed): http://www.anandtech.com/bench/Product/189?vs=88