Hi John ...
I am working to integrate WakkaWiki into my Moodle site. You can download it out here :
my site is here :
I'm still in the development stages so please pardon my dust ...
I tried to get TikiWiki to work with my goals and the overhead was simply far too much to have to deal with. WakkaWiki worked perfectly ... installs easy, easy to customize, easy to maintain, and uses PHP, MySQL database.
Give it a try ... It comes "HIGHLY" recommended.
It definitely will make your work a lot easier and happier