Alright clans, I'm ready to post my counter-build. Both to your simpleton friend and to Rockz who did well but most of the sales he encountered will expire before you buy. Some notes:
1. No SSD. That's right. No matter how much you want one, it isn't right for you, and I need you to understand why. An SSD requires a lot of tinkering, customization, and sheer luck. For all its benefits there are a lot of things that can go wrong. If you go over to Anandtech's forums you'll see they're filled with topics of people who are wondering why their SSDs, from all manufacs, will get really low speeds without any idea as to why. Believe me when I say they're more trouble than they're worth right now, and if they weren't I'd be sure to include one. Because I know you want that responsive speed, but for a rigg that is going to game and need to do it well, their reliability just falls short.
2. If you're going Win7, you're going 64bit. 6-18 months ago, I'd have not said this. 6-18 months ago, drivers would have been scarce. And 6-18 months ago, the problems you would encounter would be 64bit based rather than Win7 based. I've been on Win7 for the past 8 months and I can tell you any problem I encountered was due to it being Win7, not due to it being 64bit. You're only depriving yourself of RAM, which is stupid.
3. I like that you want to understand why we're recommending the parts that we are, and I'll do my best to explain. But there are points where on my reputation and dedication to this area, you're going to have to just trust me.
-DVD:
http://www.newegg.com/Product/Product.aspx?Item=N82E16827106276Why this one?: A generic SATA based DVD combo drive that can read and write at high speeds is sufficient for anyone not looking for Blu-ray, which I believe you're not. There's no reason to pay more than you have to on this.
-Case and RAM combo:
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.469344Why these?: The case is the M59, which is based off the CoolerMaster RC590 design. Its a clone, a re-brand. The 590 is a well thought out, bottom mounted PSU design and the NZXT version you see here allows for a lot of fan choices for different airflow patterns.
The RAM is by Corsair, a respected name that is known for their reliability and superb warranty should anything go wrong. At DDR3 1600 with reasonable, though not the best of voltage and timings, its decent RAM that will do what you need it to do.
-HHD:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136316Why this one?: This is no Caviar Black, or any ordinary WD drive. This is an RE3, and I don't mean Resident Evil. The RE series are enterprise class drives capable of extremely fast RAID performance and are extremely reliable. They are faster than a Caviar Black and have some extra error correction and safety features due to their being enterprise class rather than consumer or enthusiast class. If you feel like it, get two, throw them in RAID0, and feel the power.
-Motherboard:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128443Why this one?: You'll see now I went the AMD route with this build, to save money, and because I still have some standing issues with the i5 line. This board is the newer 800 series chipset, and if you know about AMD setups you know they encounter chipset bottlenecks before much else. The 800 series removed some of that bottlenecking, though you may have to do some minor tweaking, and being made by Gigabyte, you know it is a quality board. Its loaded with SATA III and USB 3.0, neither of which I consider needed, but they're nice to have. The layout and features will serve you well and I can't think of any area in which this board would fall short.
-GFX:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102873Why this one?: I have applauded the HD 5770 time and again as a cheap, effective, power-efficient, cool running card that puts out some serious bang for the buck. This offering by Sapphire is no exception. You need only google HD 5770 reviews to see the power these babies provide, and due to your board allowing it, you can crossfire them if you wish.
-PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371031Why this one?: Antec, Antec, and more Antec. Its like getting a SeaSonic for less. There may be sales or deals or mail in rebates that might offer you a similar PSU for less, but this is generally speaking what you want. Its a solid design, highly efficient, tons of connectors, and hell I just like the color on this one. Its a solid PSU and will deliver all the power you need and then some.
-CPU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103846Why this one?: Finally, we get to the last piece. The Callisto if you recall my build for BioAttk, is a Phenom II X2 that can unlock into an X4 if you're lucky. Even when it doesn't, its a very nice, very over-clockable CPU that is at a very nice price point. I imagine you could get this thing in the best case scenario unlocked to an X4 running 3.8GHz or 4.0 if you're real lucky 24/7 stable, with a good cooler thrown on it.
So what'd we spend?
$744.55 after tax and shipping but as I always say, that's based on my zip and NJ has tax that you might not have to pay. This is with only one of those HDDs and GFX, so you could double either one, or both if you feel like spending. Though if you crossfire, we may or may not need to bump up the PSU. I consider this a balanced build and although you might be able to pay less on other sites, I think the security of buying from Newegg is worth something, at least it is to me anyway.
I'm off to work the nightshift. I'll respond to any questions you have when I get home at 6am. I hope I've helped.