should be easy, but I can't get modem to dial

[Jim Breton <jamesb-openbsd_(_at_)_alongtheway_(_dot_)_com>]

OK, running i386 2.8 snapshot (Nov. 6).  Using a Diamond Supra Express
56K external.

Been using the modem fine now on my Linux gateway box (Debian 2.2) for
about 1.5 years or so.

On the OpenBSD machine, I hook the modem up to either cua00 or cua01 and
the same thing will happen: PPP will make the modem click and the lights
will blink for a moment... then, nothing.

The serial ports on that PC are hooked up correctly, are enabled in the
BIOS, and they both work with a mouse (I ran moused for a while to test
the ports).

If I "echo ATZ > /dev/cua00" the modem blinks as before, clicks, etc..
if I try ATH1 or an ATDT#### command, again, it just clicks and never
actually picks up the line.

Hook the modem up to my Linux box and it still works here.  All I am
using in my chatscript is "ATZ" to initialize the modem, then "ATM0W2".
If I send the same commands to that modem in OpenBSD, the ATZ command
returns normally (back to the shell prompt) but the ATM0W2 hangs and all
the lights on the modem come on, then I have to hit ^C to get back to
the prompt (at which point the modem lights go back out).

Any ideas?  Right now I'm installing minicom from Ports in the hopes
that maybe it will do something correctly which I am screwing up, but it
seems so basic I'm not _that_ hopeful.  ;)

Thanks.