I built this three or four years ago and it still copes admirably, though these days I mainly game on consoles and have my Macbook for everything else so it's been regulated to the odd Steam game and a shit load of music listening. Can't let that beautiful sound card go to waste, right?

Windows 7 Pro
Gigabyte EP35 DS3 motherboard
Intel E8400 processor
4GB Corsair DDR2 800Mhz RAM
Radeon 4870 512MB video card
Asus Xonar D2 sound card (lovelovelovelovelove)
750GB Samsung Spinpoint SATA-II HDD
250GB Western Digital IDE HDD (lol IDE lol)
Sony 7241s LightScribe SATA-II DVD burner
Logitech MX518 mouse
Microsoft 600 wired keyboard
Xbox 360 wired controller
Antec P180 case
Corsair HX620W modular power supply
19" 1440x900 LCD monitor