Sorry for the late reply.
Have a look in your services.conf file for
# CSOpersOnly [OPTIONAL]
# If this is defined, only IRC Operators will be permitted to use ChanServ.
#CSOpersOnly
If you remove the # in front of CSOpersOnly the ONLY users allowed to register channels will be anyone who has an oper block or is on the services oper or service admin lists.
Im not sure if it disallows anyone from using ChanServ or just disallows registering channels but it should help.
[Edited on 23-7-2006 by Jobe1986]