Hi Michal,
If the package works for AOLserver that it should no big problem to get it working under OpenACS. There might be differences with rights management or request processor, bit these should be solvable. Does it work for you with plain AOLserver?
You might check out xotcl-soap
http://alice.wu-wien.ac.at:8000/xorb-doc/
https://openacs.org/forums/message-view?message_id=1392605
which provides client and server side. I've not done anything, but as far as i know, it was used in an EU project at UNED.
best regards
-gn
