To put it simply, it was built for HL2 when it came out a few years ago. Everything still runs fine with no errors. I just did a reformat on both drives and installed a clean copy of XP.
The specs:
AMD Athilon 64fx 3500+
XMS Corsair RAM (512MB x 2)
Elsa Radeon 9800 Pro (AGP)
500w power supply
Generic DVD drive
Maxtor 60gb Hard Drive (primary)
Western Digital 30gb Hard Drive (secondary)
Antec PC case (black)
The Pros:
It’s a well maintained PC.
It’s comparable to some of the PCs on the market today, especially since it’s not running Vista (gag).
The Cons:
The Wester Digital HDD used to be 60gb, but I lost half of it somewhere. It is 8 years old after all. 
I’m still updating the drivers so give me some time.
Asking Price: $450 obo
I’m looking for EG parts as well, so I’ll consider trades.
Reason for selling:
I need to rebuild the suspension on my EG. The previous idiot did some questionable modifications and the $450 will get me a new set of shocks/springs I can use for next year. I’ve already ordered some of the other bits I’ll need, but an extra $450 would help.
Serious inquires only, pics upon PM request.