Well I have it. It's not as good as I thought it'd be. Basically, my mom doesn't know anything about computers, so I had to make a guess based on how she described it.
PowerMac 450 mhz G4, 256 mb RAM. Those purplish-green ones with the silver sides - plastic case with handles. The case is too short to mod into a viable PC case for most configurations since the PSU is mounted sideways.
I was hoping to do something cool with it. If money wasn't so tight, I'd love to build a Hackintosh inside of it.