My recently purchased iMac G3 ( 500 MHz ) has a 10 GB hard drive that is dedicated to OS 9.2. I do believe that it would be to crowded to have both systems on the 10 GB drive and I don't want to go shopping for a larger drive or the hassle to install a larger drive and then simply throw away the current drive. I've gone thru that exercise with far to many other Macs.

I want to install OS X to a firewire drive and have the iMac G3 host this drive.

The cats i have are the Jag, the Panther, the Tiger, the Leopard and the SnowLeopard.

I know that the Snow Leopard requires a Intel.

Which OS X should i install ?