You may find some good information by digging through the CMM and ISO900x documentation. These docs describe organizational processes that naturally produce documentation throughout the project. Don't be frightened by the volume, it's really pretty simple once you get to the basic ideas: 1) grow EVERYBODY along the way, 2) be prepared for people leaving. Remember to only implement things that make sense for your organization at your current level.

Regarding individual technologies for document storage, pick one. CVS works fine; if you have the money, Designer is loads of fun to play with. ;)

Two other things. Idealy, much of the documentation should be done before coding starts. Also, the programmers shouldn't be the only ones writing docs.

Good luck!