First PC I'm building

Hers what I've got so far

Case- $79.99(with antec psu combo) - Antec Nine Hundred Black Steel ATX Mid Tower Computer Casehttp://www.newegg.com/Product/Product.aspx?Item=N82E16811129021

PSU - $89.99 - Antec BP550 Plus 550W ATX12V V2.2 SLI Ready CrossFire Ready Modular Active PFC Power Supplyhttp://www.newegg.com/Product/Product.aspx?Item=N82E16817371016

Mother board - $104.99 - ASUS P5Q SE LGA 775 Intel P45 ATX Intel Motherboardhttp://www.newegg.com/Product/Product.aspx?Item=N82E16813131333

CPU - $139.99 - Intel Core 2 Duo E7300 Wolfdale 2.66GHz 3MB L2 Cache LGA 775 Dual-Core Processorhttp://www.newegg.com/Product/Product.aspx?Item=N82E16819115132&Tpk=e7300

RAM - $39.99(after rebate) - 4GB DDR2 PC6400 DUAL CHANNEL KIT / KINGSTONhttp://shop2.frys.com/product/5622671#detailed

HDD - $74.99 - Western Digital Caviar SE16 WD5000AAKS 500GBhttp://www.newegg.com/Product/Product.aspx?Item=N82E16822136073

DVD - $28.99 - LITE-ON Black 20X DVDhttp://www.newegg.com/Product/Product.aspx?Item=N82E16827106264

GPU - $109.99(after rebate) - XFX PVT98GYDLU GeForce 9800 GT 512MB 256-bithttp://www.newegg.com/Product/Product.aspx?Item=N82E16814150316

Total cost - $668.92

I have a few questions. Do I need to add any fans, or are there enough already in the case to keep it cool? And is all of this stuff compatible? Sorry, I've never built a PC before. This is about the most money I want to spend. Any feedback is appreciated.:)

Yeah Windows Vista 64, forgot to add thatSilosorz

1. The combo deal only works with the 1k Watt PSU which seems to be WAY to much in both power and price for your build.
(I think the Antec 900 isnt worth it at all since its been grossly overpriced ever since it gained popularity. My suggestion would be some modest CoolerMasters case, like this one or this other one.) While on the subject you might want to get a different PSU PC Power and Cooling power supplies are among the best, but the Corsair 550w would do just as good for less than the PSU you have chosen now.

2. I'm pretty sure the HD 4850 would end up being an overall better performer, and the price isnt that much of a stretch.

3. The E5200 seems like an excellent choice since its a little cheaper but not THAT much of a difference between that and the e7200.

5. That memory seems pretty cheap, it even says it in the description that its generic RAM. I guess if you dont plan to overclock it might be fine, but it seems kind of iffy to me.

6. You didnt notice I had no number 4.

Other than that great job, I hope you enjoy your build.

Thanks for the help. So here's what I would be looking at now with your suggestions.

Case- $79.99 - COOLER MASTER RC-690-KKN1-GP Black SECC/ ABS ATX Mid Tower Computer Case - http://www.newegg.com/Product/Product.aspx?Item=N82E16811119137

PSU - $89.99(with rebate) - PC Power & Cooling S61EPS 610Whttp://www.newegg.com/Product/Product.aspx?Item=N82E16817703005

Mother board - $104.99 - ASUS P5Q SE LGA 775 Intel P45 ATX Intel Motherboardhttp://www.newegg.com/Product/Product.aspx?Item=N82E16813131333

CPU - $88.99 - Intel Pentium E5200 Wolfdale 2.5GHz 2MB L2 Cache LGA 775 65W Dual-Core Processor - http://www.newegg.com/Product/Product.aspx?Item=N82E16819116072&Tpk=e5200

HDD - $74.99 - Western Digital Caviar SE16 WD5000AAKS 500GBhttp://www.newegg.com/Product/Product.aspx?Item=N82E16822136073

DVD - $28.99 - LITE-ON Black 20X DVDhttp://www.newegg.com/Product/Product.aspx?Item=N82E16827106264

GPU - $109.99(after rebate) - XFX PVT98GYDLU GeForce 9800 GT 512MB 256-bithttp://www.newegg.com/Product/Product.aspx?Item=N82E16814150316

and since you said the ram was kinda iffy, do you think this is good?

$59.00(after rebate) CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184

Also you said the HD 4850 is better so what about this one -$150.99 (after rebate) ASUS EAH4850/HTDI/512M Radeon HD 4850 512MB 256-bithttp://www.newegg.com/Product/Product.aspx?Item=N82E16814121253

Overall - sounds exactly like what everyone else has / more or less :) ur fine.