I called Canon tech support and the representative patiently guided me in locating a driver that was not specifically for my 30D but another camera (can't remember which). He cautioned me to not remove the existing driver because the new one would so...
I called Canon Tech support and a representative guided me in downloading a driver that works with my EOS 30D. It wasn't specifically for the EOS 30D; it was for some other kind of camera. But it works fine.