andy at theasis.com wrote"
> Someone mentioned earlier that one option is to do USB <--> serial. I'm
> interested in any reports of success with these devices.

Go to www.linux-usb.org and follow the link to supported devices and look
at the serial driver.  There are drivers for several USB to serial converters.
I have used (and worked on) the drivers for the Keyspan PDA adapter
(keyspan_pda.o)
and the Digi Acceleport adapter (digi_acceleport.o).  These both work, but the
Digi device is no longer manufactured, and the Keyspan driver has somewhat
limited functionality.  The supported drivers page will give you an idea of what
other people got to work.

> I suspect you need 2.4 kernel, right?

The latest 2.2 kernels also have USB support now. 

> Anecdote:  I tried a USB <--> SCSI adapter for a Scanner, and got it to
> "work", but it was all messed up with timings or something, and would
> output inconsistent junk (e.g., separated RGB colors, messed up image,
> etc.).

The core Linux USB driver is pretty solid, but the drivers for individual
devices
are of varying quality--in my limited experience.

-- Al