To remove the NPanday follow these steps:
%ProgramFiles%\Microsoft Visual Studio 8\SDK\v2.0\Bin\mscorcfg.msc
other possible locations for mscorcfg.msc
An alternative to step 3 is to run the following commands from the command prompt as an administrator:
gacutil /u NPanday.Model.Pom gacutil /u NPanday.Plugin
If you didn't use the installer package to install NPanday, you should still perform step 2 onwards above, and then the following additional steps:
C:\Documents and Settings\[user_home]\My Documents\Visual Studio 2005\Addins\NPanday.VisualStudio.AddIn
Also delete the Addin-file in corresponding folders for Visual Studio 2008 and 2010.