This forum software is several years old, and has been so heavily customized that I have avoided upgrading it. Well, now IE9 comes along with a whole new set of issues. Fortunately you can solve the issue by adding dc3.com as a compatibility view:
Tools menu, Compatibility View settings In the window that appears enter http://forums.dc3.com/ and click Add. 'dc3.com' will appear in the list. Stop and restart IE9 and navigate to the Comm Center, it should be OK now.