Dude, for just about $300 you could get yourself a DECENT system.
Asus A7N8X (with the onboard 6.1 channel audio, Ethernet, Firewire, USB2.0, 5 PCI slots, and has 8x AGP (AGP 3.0)) for $113 * (note: AGP 3.0 is compatable with 2.0 cards (2x/4x) since it still uses 1.5V) ($117 from newegg)
512MB PC2700 for $64 * ($68 at newegg)
AMD XP 1800+ (1.53GHz) for $66 (Retail, from newegg. OEM is only $3 cheaper, so you might as well go retail and get the heatsink and an extra 3 years of warranty.)
Then you have $47 for the case (CHIEFTEC Chasis (Mini-Mid Tower) BLACK Model DH-01B 450W) from newegg. (
see it)
Total: $290 (w/o shipping)
That is CHEAP for a pretty much brand new system. You can use your existing drives in this system with no trouble at all. All the prices, unless specified are from newegg.com
* Prices from latest comp show (MarketPro)
You can build it yourself, or I could do it for you and ship it to you. (I won't build it for free however.)