Hi Steve
I was trying to get mod_aolserver working previously but has since switched to AolServer, because of the problems with getting it working correctly. I can't tell you what's wrong, but I could not get mod_perl working alongside mod_aolserver either. I'm not very strong in Apache, but I haven't heard about anyone else getting it working. So getting fancy things working might in general give you some problems.
You might want to contact Petru Paler if you are getting serious about using mod_aolserver, since he might be working on similar problems. https://openacs.org/forums/message-view?message_id=19176
Best of luck