I knew I could get quick answers.
Thanks to all who responded!
The processor again is the Thunderbird 1100B. I've got 512KB of RAM, and a Radeon 9700 already installed. The thing's weakness is of course the low clock speed on the MB.
No further info on the MB. It was generic, I forgot what chipset, and I haven't been able to find it. This hain't looking too good....
And yes I have considered just upgrading the whole thing. My problem is that my current configuration is sufficent for what I want to do and I don't see advantages to upgrading, besides running Windoze faster. I estimate $250 or so for the MB/CPU if I want the Sempron 3400, $150 for an ATI X1300. $400 right there. And then I probably want to replace my now 2 year old hard drive, add another $60. (I went to my local Microcenter and saw the prices). Well, the good thing is I'd get 5 PCI slots, USB 2.0, and firewire none of which I currently have (but do I really need them?). And then maybe I'd want 512KB of the cheap Corsair memory instead of the generic crap I have now ($80). And then maybe I'd want that neato Plextor Firewire DVD burner ($140).
Oh dear.
So, I thought about just buying a "better" old Athlon on Ebay might do the trick. I suppose the 1.4 GHz Thunderbird might work (around $40).
You're saying the XP is out?