Windows ME isn't your problem. [But don't get me started raving about all the buggy windows OS's].

I would take out that graphics capture card and the firewire card, if it isn't too much trouble, and try your video then...

Also, Windows gets itself all fouled up by retaining in Regedit info about things once installed but now replaced. To avoid trying to fight Regedit, when big problems persist, I usually format, reinstall the OS, reinstall my programs, and tell myself I'm having fun!

Good luck getting your Geforce 3 going. I have about 10 machines with Geforce 3, and it is no problem. DO not download and install the latest detonators, however; they cause more problems than they solve. Go with the earliest detonator you can find, probably at Guru3D.com