Not a bad little box you scored, and I like the price.

Keep in mind that the system bus is higher on the G3 and will be more responsive under OS X. I'd throw a PCI video card in there, preferably one with 32MB of RAM, a G4 ZIF, and a faster IDE controller, possibly a USB card as well.

I have a BeigeG3 MiniTower which I love to death. It has gone from OS 8.6 through OS X.3 and still continues to serve me well.

May yours serve you just as well.