Almost done, please help me finish!~

[colorfulfly]

Rosewill RP600V2-S-SL 600W ATX12V v2.01 SLI Ready Power Supply - Retail $64.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182032

ASUS P5Q PRO P45 Motherboard $139.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131299

Intel Core 2 Quad Q6600 Kentsfield 2.4GHz 2 x 4MB L2 Cache LGA 775 Quad-Core Processor - Retail $189.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16819115017

EVGA 512-P3-N801-AR GeForce 8800 GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - Retail $149.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130318

CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail $57.00

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184

Western Digital Caviar SE16 WD6400AAKS 640GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive - OEM $84.99

http://www.newegg.com/Product/Product.aspx?Item=N82E16822136218

Those are what I have chosen.
1) Is everything there compatible?
2) What OS should I get? Someone told me to get Windows Vista Ultimate 64 bit but I heard Windows Vista slows down the computer and hogs a lot of resources..?
3) Can someone help me choose the disc drive? I want to be able to install and play the newest games. Play Dvds and CDs and burn.
4)Can someone help me choose a case? I would like the cheapest one possible that suits what I have.

Note: I plan to play COD4, TF2, Crysis, FEAR 2 and other new games. I also plan to overclock the cpu to at least 3.00 ghz.

I am not sure what else I need. Please help me finish up my computer system.
Thanks a lot!

 

[emp]

Yes everything is compatible, but my question would be first of all, why are you limiting that setup with only an 8800GT? For a little more you can get an HD 4850, especially since you are buying a crossfire capable board.

GIGABYTE GV-R485ZL-512H Radeon HD 4850 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125238

Well what you heard is partially true and wrong at the same time, Vista only slows down systems that are not capable of handling it properly (i.e. old junk), it will use approximately 30-32% of the available memory to keep your most used applications ready to launch (speeding things up), but a not so widely commented feature is that services hogging memory shutdown when you're running games (my RAM usage is at around 1.1GB on idle, but when I run games the OS drops down to about 700MB).

Ultimate is not worth it to be honest, it comes with a lot of extra fluff that nobody really uses, the best version is probably Home Premium 64.

Microsoft Windows Vista Home Premium SP1 64-bit English for System Builders 1pk DSP OEI DVD - OEM

http://www.newegg.com/Product/Product.aspx?Item=N82E16832116488

SAMSUNG Black 22X DVD+R 22X DVD-R 16X DVD-ROM 2MB Cache SATA 22X DVD±R DVD Burner with LightScribe - OEM

http://www.newegg.com/Product/Product.aspx?Item=N82E16827151173

Antec Three Hundred Black ATX Mid Tower Computer Case - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16811129042

Last thing I want to comment is on the PSU, Rosewill PSUs are of doubtful quality, I would suggest against getting such a unit. Try Corsair, Antec, Seasonic, PCP&C among others for quality.

CORSAIR CMPSU-650TX 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

PC Power & Cooling S61EPS 610W Continuous @ 40°C EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703005

 

[Onus]

No to that PSU. There was a Rosewill (500-RP iirc) that surprised one of the guys at jonnyguru by passing all their tests, but the brand as a whole is considered crap. For that price, you can find something much better by Antec or OCZ; a little more will get you Corsair or PC Power & Cooling.
No to the RAM also. For $63, you can get this Mushkin that has better timings and runs at the JEDEC standard 1.8V: http://www.newegg.com/Product/Product.aspx?Item=N82E16820146731
If budget is a concern, then this Mushkin for only $50 AR has slightly looser timings but also runs at 1.8V: http://www.newegg.com/Product/Product.aspx?Item=N82E16820146692
For that degree of overclocking, you will want a better cooler. Check out this link: http://www.frostytech.com/top5heatsinks.cfm.
If you can afford it, you'll get better performance from an ATI HD4850, but on a budget the 8800GT is not a bad choice.
Good HDD, and P45 is probably the right choice also.
Hard to pass up a good quad, but you might want to consider an e8400 also.
Most any Retail SATA burner would be fine. The Retail versions include software, which you will want.
The cheap ($25) Rosewill cases have room for all that, and can take front and rear 120mm fans, so their cooling is also enough. For another $10-$20, the low-end CoolerMaster cases are a little nicer, and are tool-free, but inside arrangement is similar. I've used both, and would buy either again. If you're going to move or ship the system, the tool-free mounting of the CoolerMaster should be supplemented with screws to avoid anything coming loose inside.

 

[emp]

I think the memory is fine, Micron D9 chips are used on those and the XMS2 lineup as a whole is still looking pretty solid despite the fact that it's been out on the market for a long time now. This is also a solid kit, however a bit more pricy:

OCZ Reaper HPC Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16820227284

Regardless of which you choose, they are all good DDR2 kits, the one suggested by jtt looks good, but I'd get Corsair, Crucial, G.Skill, or OCZ, but that's just the raging fanboy in me talking...

 

[aevm]

Excellent advice there from Emp, I second it 100%.