first PC build?

Hi folks! I am looking to build a new computer for FS2004 w/ lots of payware/add-ons, looking to run max on every slider.... looking around on newegg, i came up with this set-up.... any suggestions? comments?

Case: APEVIA X-PLEASURE-BK Black Aluminum ATX Full Tower
Mobo: EVGA 122-CK-NF67-A1 LGA 775 NVIDIA nForce 680i LT SLI ATX
Processor: Intel Core 2 Duo E6600 Conroe 2.4GHz
RAM: G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800
Graphics: BFG Tech GeForce 7900GS 256MB GDDR3 PCI Express x16
HD: Western Digital Caviar SE16 WD2500KS 250GB 7200 RPM SATA
CD/DVD-ROM: Sony 16x dvd/48x cd-rom
PSU: OCZ GameXStream ATX12V 600W

thats pretty much the basics... other stuff includes: 19" LCD, Windows XP-ME.

also, would 600W be too much? i have done a little research on it all, but i
think it would be enough, but this is my first build! so kinda new to it all....

probably would OC the processor, so any good cooling suggestions?