>Check out http://www.west-wind.com/wwHelp/
>
>I've also heard of people using internal Wikis to share project information. You can buy one at www.wikis.com, or there are several free ones out there.

Guilty as charged - was involved with one such in 2002 and this year again. IOW, it's quite stable, a mature product with exactly the minimal amount of bells and whistles. It just works. The Steven Black's one, that is.