People say that Tiger is incompatible with the non firewire 350MHz, but it actually is.
Christopher is correct. Tiger's System Requirements include a firewire port, but that was a (rather arbitrary) way for Apple to keep its support efforts simple for Tiger. I've installed Tiger on several 350MHz iMacs and it's never been a problem. IIRC you don't even need to fool the installer - it just works.
M
Yeah, because the motherboard had the firewire chip in it, it just lacked the ports, IIRC. So, you *could* add firewire to these, though not easily.
Nice score!! I have been on the hunt for a 700mhz model for some time. Quite rare indeed. I would be happy with any iMac G3, they are just so cute.