So, a year later I reply to my own email ;) I've written the nsldap module I was looking for. It works for me, but I guess it still has bugs. If anyone there needs to access an LDAP database from within AOLServer and would like to try this out, it can be downloaded from
http://www.galileo.edu/obonilla/software/nsldap I would be glad to give the module to the AOLServer folks so they can put it in their modules repository. Just send me email... Thanks -Oscar