Here's what I have so far...
Processor:
AMD Phenom II X4 955 Black Edition Deneb 3.2GHz Socket AM3 125W Quad-Core Processor
Motherboard:
MSI 785GT-E63 AM3/AM2+/AM2 AMD 785G HDMI ATX AMD Motherboard
Case:
Xigmatek ASGARD II B/B CPC-T45UC-U01
Graphics:
SAPPHIRE 100315L Radeon HD 6850 1GB 256-bit GDDR5 PCI Express 2.1 x16
Memory:
Team Elite 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model TED38192M1333HC9DC
Storage:
Western Digital Caviar Blue WD5000AAKS 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Power:
Antec EarthWatts Green EA-380D Green 380W Continuous power ATX12V v2.3 / EPS12V 80 PLUS BRONZE Certified Active PFC Power Supply
Optical:
LITE-ON DVD Burner - Bulk 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM Black SATA Model iHAS124-04 - OEM
Expectations: A computer that can max out Vindictus, Team Fortress 2; Do well in Just Cause 2 and Starcraft 2.
All for under $500, but the cheaper the better.
This should come to a total of about $476.94.
Are there any other changes I should make?