Hi ljones,
Welcome to amiga.org
Yes, a few people still use Amithlon.
It sounds like you are going to need the latest update called "contrib3b" as well as the latest kernel. These should not only give you a far better chance of using that laptop, but also get the SB Live! working.
You should find the links you need to visit
here and llok for the CONTRIB3B entry. A link to the kernel should also be somewhere thereabouts.
A good place to visit is the Yahoo Groups "amithlonopen" mailing list. You'll find a lot of answers there.