Currently my company has a 28.8Kb pipe to the outside via a modem.  We're
beginning to out grow it and ISDN is just way too costly in Western PA.

So I'm left with Frame-Relay as an option.

I've got some nice quotes, but I'm wondering what I can expect to plonk
down on a CSU/DSU?  It would be nice to get one that can move at T1 speeds
as well in the even we grow again :-)

Is there anyone out there experience with this type of thing?

Currently the ISp is pushing a CSU/DSU that requires a seperate card
in the PC and only has support for WinNT server and commerical OSs
(ugh!).  I'm not about to give up our reliable NetBSD box!  Besides
there must be solutions out there somewhere...