From whatI've read in other threads Andrew, AOLServer has some nasty shortcomings in loading Tcl packages. Having said that, I just found this thread:
https://openacs.org/bboard/q-and-a-fetch-msg.tcl?msg_id=0005Bz&topic_id=11&topic=OpenACS
Where DaveB says it's not too hard - I'll give it a shot and let you know how I go..