Outlook Error This operation was cancelled due to restrictions in effect on this computer

This error may occur if a browser was installed and then uninstalled. The associations with IE get broken. This can be fixed by running the batch file located here. Extract the zip and run the batch file inside. Close IE, and any MS Office apps before running.

See this page for more info (the author of the batch file).

Media Center Studio

Media Center Studio is an excellent tool for editing and configuring the Media Center Start Menu. It's a very handy tool.