For those of you in AutoCAD 2012 - be sure to check out the new App Store that is easily accessible from inside of AutoCAD (via the Autodesk Exchange). You can get to the Autodesk Exchange by selecting the tool in the upper right corner of the drawing editor.
Once you're in the Autodesk Exchange - simply select the Apps tab and you're on the way to a host of awesome applications that are sure to increase your productivity!
Here you'll find translators, blocks, productivity tools (maybe just the one you were looking for!), learning tools - all kinds of great goodies! There are dozens of apps for General Design, AEC and Manufacturing.
I'm finally on my way home (again!) from London...looking forward to sleeping in my own bed tonight!