I don't remember exactly if my father built that machine for me in 1999 or a year or two later than that (would've only been 8-9 years old at the time), but the specs were something like this:
-some old AT case and PSU
-PC-Chips M598 (WORST. MOTHERBOARD. EVER. I didn't truly realize how bad it was at the time, but it clearly shows that he wanted this build cheap.)
-AMD K6-2 350, overclocked to 366 MHz with the FSB dropped to 66 (For some reason, the system was unstable at 100 MHz FSB no matter what I tried. I actually thought it was supposed to be 366 MHz for years!)
-128 MB PC-100 SDRAM
-SiS 530 integrated graphics (Don't even think of updating past DirectX 7 with this unless you want to lose DirectDraw acceleration and make it even more painfully slow.)
-ATI Xpert98 PCI (I recall my father actually having to return an AGP card and get this upon realizing that the mobo didn't actually have an AGP slot. Still performed pretty well, though.)
-Creative SB Live! Value
-Maxtor 10 GB IDE/PATA HDD
Good enough for DOS and early Win9x gaming, but running anything like Unreal Tournament onward ruthlessly showed how underpowered it was, especially by comparison to the better computers my father owned. (It wasn't too long before he got one with an Athlon XP 1700+ and I ended up gaming on that thing all the time instead, even though it wasn't built specifically for me.)
I've since sent the computer itself to a recycling center, only keeping a few parts like the HDD and the SB Live! Value. Some of the wires were developing faults (including that to the main CPU fan!), it was AT, the M598's layout proved to be dreadful when I started tinkering with the inside more (having to squeeze I/O port headers between expansion slots is NOT pleasant!), and most of all, I could easily buy or build way better systems representing that era of computing for not much money.