There’s a handy App to manage your installed Autodesk Exchange Apps! You can check app status, install updates, access help, uninstall and rate them from one dialog. Get Autodesk Exchange App Manager free from the Autodesk Exchange website.
UPDATE 2012-06-3: Must add, this is currently for AutoCAD 2013 (inc Architecture, Electrical, Mechanical, MEP, Civil 3D verticals)
View, update, uninstall and get help on Autodesk Exchange Apps downloaded from the Autodesk Exchange Apps website. The Autodesk Exchange App Manager displays Apps installed for your product and provides access to the Autodesk Exchange Apps website where you can download Apps for your Autodesk product. A blue box with white download arrow in the icon view indicates the availability of an update.