I don't know about the docklet you're asking about, but all the docklets in my Docklets folder appear in the Docklets list in the ObjectDock Properties dialog, and the Add menu when right clicking a dock.....
Do you have nothing in that list?
You can download the MSVCR71.dll here.. http://www.dlldump.com/download-dll-files.php/dllfiles/M/MSVCR71.dll/download.html