Try PB Wiki

I have created a wiki for a group project ( I used PBWiki) and can tell you from my own experience how easy it is to set up a wiki page. In no time everyone in our project learned how to use the wiki site, make posts and link documents. Some users were better than others and were even able to customize the wiki and used all the advanced features.

The most widely used wiki software programs are MediaWiki (www.mediawiki.org), TWiki. (http://twiki.org) and PB Wiki (http://pbwiki.com ).