I got a free flex ATX computer today from a coworker who knows a high school that is throwing a bunch of these out.
http://i19.ebayimg.com/02/i/05/9f/5d/1d_1.JPG

It's a thin client with these specs:
Celeron 667 MHz (will upgrade to P3 1 GHz)
No RAM (I put 128 MB in it)
ECS flex-ATX socket 370 mobo
2.7 GB hard drive (will upgrade to 40 GB)
Flex ATX PSU of unkown wattage
Windows 2000 Pro
No optical or floppy drives
Single PCI slot (but it's blocked by the hard drive)
Integrated video (8 MB) and sound

I'm thinking about using this as a small web server or a hardware firewall. Right now my biggest problem is how much noise the CPU heatsink fan makes. It is probably 3 times as loud as the system's power supply fan and can be heard all over the room!

Are there any ways to get a fan to quite down without having to buy a new one?

I'm also thinking about seeing how far I can OC the Celeron. The problem is, its mobo uses jumpers. Does anyone know of a good OCing guide for old school motherboards?

I am still debating about what OS to put on this baby. I might leave Windows 2000 on there or put Linux on it.

Do you have anymore? I need a PSU from one of those, MF Gave me a Computer JUST like that, but it needs a new PSU.

If I'll find another one Nerdz, I'll let you know!

Not bad little machines, are they?

I just loaded a P3 1 GHz in mine. For now, I plan on upgrading the hard drive and keeping Windows 2000 Pro on it. I'm going to use it as a second computer right next to my main machine.

WOW if you get one for Nerdz, I'll take whatever he doesn't use . . . I need a mobo for my 1GHZ PIII. Those things run very cool (somewhere around 25 watt power draw) and you can hook the 12V+ power wire for the fan to the 5V+ to greatly reduce fan speed/noise without much worry of overheating. You can leave the other 2 wires hooked to the mobo for the RPM monitor.

It should be easy to get that thing going the way you want it. You can probably find a manual for that mobo to tell you what frequencies you can get out of it. Once you have that (printing it out helps), it should be a rather normal OCing affair. If it is like my slot 1 mobo's, it probably only has a handful of bus speeds instead of 1MHZ increments.

Great find and good luck with the project!