Here is what I plan on building. I want it to be effective at gaming for the next couple years (excited for the upcoming blizz titles and spore!)

Processor:Intel Core 2 Duo E8500 Wolfdale 3.16GHz 6MB L2 Cache LGA 775 65W Dual-Core Processor

http://www.newegg.com/Product/Product.aspx?Item=N82E16819115036

Motherboard:GIGABYTE GA-EP35C-DS3R LGA 775 Intel P35 ATX Dynamic Energy Saver Ultra Durable II Intel Motherboard

http://www.newegg.com/Product/Product.aspx?Item=N82E16813128082

Video card:ASUS EAH4850/HTDI/512M 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=N82E16814121253

Ram:CORSAIR 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=N82E16820145184

Hard Drive:Seagate Barracuda 7200.11 ST3750330AS 750GB 7200 RPM 32MB Cache SATA 3.0Gb/s Hard Drive - OEM

http://www.newegg.com/Product/Product.aspx?Item=N82E16822148298

Sound Card:Creative Sound Blaster X-Fi XtremeGamer 7.1 Channels 24-bit 96KHz PCI Interface Sound Card - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16829102006

Heatsink:ZALMAN 9500A 92mm 2 Ball CPU Cooler - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16835118223

Power Supply:Rosewill RX950-D-B ATX12V v2.2 & EPS12V v2.91 950W Power Supply 100 - 240 V TUV, FCC, UL, CE, ROHS - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182097

Case:XCLIO A380BK Fully Black High Gloss Finish SECC 1.0mm thickness ATX Full Tower Computer Case - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E16811103010

I plan on running Vista 64bit. I assume this rig could run Crysis at med/high settings and everything else pretty maxed out. Im sitting at around $1000 dollar cost right now including bundle specials and rebates. Thing I am not certain on:Am I better off with the dual core or should I go quad core but less Ghz? (I think the comparable price quad core was 2.4ghz). Is my motherboard fully compatible with my case and hardware choices? Will the system run decently cool and quiet or do I need to invest more in that area? I might invest in a raptor HDD in the future but currently don't plan on it. If I go dual monitors do I need another graphics card? Sorry if these questions sound noobish but I haven't built a computer since like 1998 so I feel sorta out of the loop. Also looking for monitor suggestions! If you can see anywhere I am getting major ripped off or that needs upgraded let me know (the power supply is part of a bundle with $120 rebate otherwise I would downgrade it)

Thank you all for your help!