I've been waiting for a phone call from a guy for the last half hour so I figured I'd take the time to set up the calendar rather than just procrastinate on it.
The calendar is available
here, as a link at the top of this forum (The Haven Guild Event Calendar), or via a drop down at the bottom right (on the Blue2 themes) when you're viewing the calendar itself.
Only people signed into the World of Warcraft usergroup will see the events (and Super Mods, who see all non-private parts of this forum anyhow).
I've migrated all the current events, plus any back to January 2007. This new calendar doesn't run before 2007 anyhow so pointless migrating any others.
It's not particularly obvious, unfortunately, if you've posted into the wrong calendar (i.e. the main one). I've made Duren and Windzarko Mods for that calendar but I think it'll take a Super Mod or Mod+ signed into the WoW usergroup to push events from the main calendar into the WoW calendar. I'll keep an eye on that, as I can, and I'd appreciate if people could shout (via PM, initially) if things are misdirected.
Personally, I'm only signed back into the WoW group to figure out what was happening with all these events.
I'll stay here to respond to queries over the next week, then probably seek the calm/quiet again.
Let me know how you get on with it and if/when you move to raid calendar I can switch the forum link to point to the raid calendar instead and close the WoW calendar here (probably).