I always like to have an optimistic view of old macs...I guess i am sentimental. I also have a old 7100, that I have done nothing to in years..my iMac takes all my attention. But I have thought about upgrading it. First, get a better video card, maybe the radius thunder 24 nubus or something like that, there were some nice video cards (for thier time) made for nubus. Next Get a g3 upgrade, probably find a good used one on ebay. If you have a 7100/80 that is better than a 7100/66 because it has a 40 mhz system bus instead of 33 mhz. therefor the upgrade card will go at the fastest mhz it can, maybe 300 or 400mhz g3, that is not bad. Then Max out the ram, i think you can get 128 mb total..not alot, but ohwell, the best it can do. I don't think they make a usb or firewire video card for nubus....but, what you can do is, they used to make a nubus to PCI adapter box, it was a nubus card that went out to a box with 3 or so PCI slots, so you can use PCI, but only at nubus speed, still that lets you add usb and firewire, i hope...I don't remember the name of who made that thing though, but I am sure someone does...then get a FWB Jackhammer nubus card that adds fast and wide SCSI and maybe add a raid to the card, they used to make a raid called the sledgehammer, that was cool..then pop an internal CDRW into the old CD spot, if it fits, if not there are plenty of external ones that you can add to the jackhammer card too.. Hope that helps...