Try this link to see a SME User Manual I am working on privately
Good for you !
the developers have never answered my request to volunteer with Documentation assistance.
Nor mine !
It is a long way from being completed but the basics are there and the internal document links & graphics all work. Not sure if I will continue with this until the future of SME Server settles down.
No matter - you've started, and I say PLEASE DO continue !
I was beginning to think along the same lines, but I'll be happy to assist your project instead, in any way I can, if you like (you are welcome to contact me off-site).
I also consider the weblinks section (especially the howto-section) a crucial part of contribs, and have been thinking about a way to mirror it, since the last contribs breakdown.
But since much of the documentation is locally stored (at contribs), that would mean copying the actual documents, and I'm not sure if thats entirely legal.
But again - keep up the good work !!!