apologies in avance, as i realize that the propper answer for this query 
is rtfm/rtfFAQ.

Being at a university, with no permanent IP assignments available 
(except to faculty & staff) for dialup usage, i'd like to know if
netbsd's ppp setup compatable in any way shape or form with server  
dynamic IP assignment?
that is, does the domain name/IP of the machine have to be specified 
*before* attempting to connect, or can it all be taken care of within
ppp (given the subnet mask and namserver IP), as mactcp and open 
transport do?

a simple, yes read the faq, or no, not doable, will suffice.
(though i'm not adverse to a few pointers)

TIA,
-jim