This may becoming "insane", but I'll throw some more questions -- this is all a learning process for me and I much appreciate your assistance:
o How does one find out what files are contained in a download? I don't have a full list of commands but recall that something like "l" (the lower case L) and another letter or two made Linux list all of the files in a program (like "dir" in DOS). The Sane program is sitting somewhere on my hard drive, probably behind a number of "/" and words. If I can be pointed to the location, I should be able to see "sane dot something", "xsane dot something" (and probably "insane dot something"
... Is this a good guess?
o In the /etc/sane.d/snapscan.conf file that an Ubuntu HOWTO file advised to change to read (and this is what I did): firmware/etc/sane.d/ESFW30.BIN, is this the correct way to enter it? It's now there (though easy to amend back to what it was) but, when I show "scanimage -L" from the '$' prompt, I receive the following: "No scanners identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages)." The scanner is connected correctly and turned on. I even rebooted Mint to make sure it could find it! So now I need a "sane-find-scanner tool (if appropriate)". What might the tool be?
o Is there an alternative program to Sane/XSane that'll work with minimal fuss? I've heard of something called "Vuescan" and googled it. Their website indicates that it's a $$$ program that works in Linux and with my scanner (I think). I'm not sure about it though they quote positive reviews on their site (naturally).