I have just now purchased a TREO 600 and am very excited to explore what it has to offer. I've done quite a bit of searching (I think), but I haven't been able to find an answer to this question:

Is there an app that will allow me to dial-in directly to a modem (eg. BBS; Community Network; etc), and work as a terminal emulator (eg: vt100).
I am also wondering if the phone-service provider can hobble the Treo in the regard.

Related (?) question: What the heck is 'Virtual Modem'?