> I have a Thinkpad without RS, and a Palm III without USB :-) does
> anybody have experience with connecting Palm III using a USB to
serial
> converter? The available Howto's do not seem to be conclusive
about

Yes, it works very well. Later Palm devices, with USB built in, are
problematic to setup (well, they have been for me anyway).

> On a more general note -- assuming I have a USB to RS converter. I
have
> read that it creates the device /dev/ttyUSB0. Does it work exactly
the
> same as if I had a serial port and used /dev/ttyS0?

More or less. There are a few differences - for instance, ttyUSB0 won't
exist until the adapter is plugged in.