Called CCG, Campus Communication Group, today and got some decent answers, some unclear ones.
-They don't block any type of packets, so they said UDP should work.
-They don't use a proxy or NAT router.
-They said they had no way to find out if Cisco routers were in use, let alone find out if the firmware was 12.xx or later.
-When I asked if it was a switched or routed network, they said that there are switches in the individual buildings, and the whole complex is routed. This seems like the wrong answer, right?
They said the entire complex runs off of a 10 megabit DS3 line, which is shared by around 600 people. They said their contract was worded to say "average guaranteed speed of better than a 56k modem," which also has me worried that "high speed" internet ain't so high speed.
Anything else I should be asking them? Should AH work there?
I'm starting to think that the only way to find out for sure will be to head down there, install AH on a computer, and play for a few hours.

Thanks for the help here.