No-ip.com should have all the documentation you need. If not search google for "DNS help" or "DNS Records" or something like that. And also remember that if you want people to be able to connect to these services, you have open the ports these use on you router/modem to allow the connections can pass through.

The parlance on the approval!

Try TikiWiki, I've heard that's easy to run off of home computers, and it has a board.

http://tikiwiki.org/tiki-index.php