The good news: I am now the proud owner of a Fujitsu fi-4750C scanner and
anticipate converting the mountain of paper in my life to bits in PDF files.
The bad news: I now have to revisit the sins of my youth and reconstruct a
suitable SCSI and driver environment so I can use my copy of Adobe
Fujitsu still makes twain drivers for this machine, even for ancient
versions of windows. Even though I happen to think the sane-fujitsu
backend is better, I don't see any reason to use it (and sane-twain)
over the native drivers on the windows platform. Find a scsi card that
works, and go to it.