Ont his page -
http://www.mytattooforum.com/groups/, under where it says Your Groups, there should be links to : Create a New Group, Advanced Search, and Subscribed Discussions. The links aren't in a box. Move your mouse around under there to make sure you didn't accidentally make the text the same color as the background.
You are using a mod for your urls, so I hope the mod isn't doing the wrong thing to the links.