> I have found on the PICs that Ive tried to use the internal osc for
> UART comm's, its never worked out

I use the 18F1320 with IntOsc and have the fixed-frequency device
(an 18F4550) send timing information into Rx. Rx is temporarily
re-assigned as an I/O that the timer can measure transitions on. The
1320 then uses the timer result to re-calibrate itself. The 1320 has
auto-baud but the drift is generally too minor to bother. It works
out well for me because I'm in control of the whole thing, and have
to contend with a 40C temperature range, but you should be able
to tell any remote device to send an occassional byte for reference

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