After a discussion of wiki software on the DNUG mailing list, I decided to try the most popular product ScrewTurn Wiki. I downloaded the Desktop Edition, altered the configuration and it ran like a treat. Created a user account, and started editing.
The thing I love the most about wiki writing is that when I think of tangential thoughts (happens often) you just mark those parts as a link, and keep on with the current meme.
The output of the mark-up looks good, and the preview allows a quick turn-around when altering the layout of the information.
It gets my vote.