how to set serial-port default-speed

["T. Horsnell" <tsh@xxxxxxxxxxxxxxxxx>]

FC4 yum-updated on 12 April, on ia32 system.

I need to set the attributes (particularly the speed)
of the serial port /dev/ttyS0 before an application
tries to use the device plugged into it. Is there a way
to do this from the command-line (for use in rc.local, say).
setserial doesnt seem to give me a way to set the baud-rate

Thanks,
Terry