I've been using VueScan for several years with a long list of scanners that are SCSI, Firewire, USB, etc. Not only is it handy for using scanners long since abandoned by the vendors (shame on them) but it's also *much* better than most of the software provided by the vendors for currently supported scanners. I would highly recommend it. I have had to contact Hamrick numerous times over the years and his responses have always been prompt and helpful -- most recently in getting a Canon D1230U scanner running with VueScan on an Intel Mac that is unsupported by the maker. He revised the app and emailed it to me all in the same day, a real lifesaver!

Note to others with the D1230U: Besides the Vuescan issues I was having, you *must* manually install the Canon driver on your Intel machine as the Canon 4.1.3 installer craps out without installing all the needed pieces in the Library folder.