For a Word plugin you need to set HKEY_CURRENT_USER/Software/Microsoft/Office/Word/Addins/ for example. You would copy this from the source computer's settings. For me I just need Description, FriendlyName, LoadBehavior, Manifest and delete the rest. Manifest may look like [TARGETDIR]YourPlugin.vsto|vstolocal I cannot guarantee that works, but it is what we did before VS 2012 forced a switch to IS 2012 Spring Express.
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