Building a mid-range computer

I’m going to try to build my first PC. I do graphics design, web design, and primarily play Unreal Tournament (I used to play 2004, now I want to play III). So how does this system look? It’s all from Newegg. Total: $786
[LIST]
[]Any compatability issues?
[
]Any parts you had bad experience with in the past?
[]Is this PSU adequate?
[
]What’s the difference between PATA, SATA, and IDE CD drives? Which one is the best?
[/LIST]

$40
SAMSUNG 20X DVD±R DVD Burner Black SATA Model SH-S203B - OEM

$45
COOLER MASTER Centurion 5 CAC-T05-WW Black/Silver Aluminum Bezel, SECC Chassis ATX Mid Tower Computer Case - Retail

$70
Seagate Barracuda 7200.10 ST3250410AS 250GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM

$110
XFX PVT84JUDD3 GeForce 8600GT XXX 256MB 128-bit GDDR3 PCI Express x16 SLI Supported Video Card - Retail

$28
Creative Sound Blaster SB0570 Audigy SE 7.1 Channels PCI Interface Sound Card - OEM

$100
CORSAIR CMPSU-550VX ATX12V V2.2 550W Power Supply - Retail

$55
Logitech X-530 70 watts RMS 5.1 Black Speaker System - OEM

$7
LITE-ON SK-1788/BS 2-Tone PS/2 Wired Standard Keyboard - Retail

$50
A-DATA Extreme Edition 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model ADQVD1A16K - Retail

$100
GIGABYTE GA-P35-DS3L LGA 775 Intel P35 ATX Intel Motherboard - Retail

$190
Intel Core 2 Duo E6750 Conroe 2.66GHz LGA 775 65W Dual-Core Processor Model BX80557E6750 - Retail