GroupWise client TPH DLLs must be registered in the Windows registry so the GroupWise client knows where to find the DLL. The Windows registry location and settings are as follows:
Key "HKEY_CURRENT_USER\Software\Novell\GroupWise\Client\Third Party"
Item Name "DLLx" (where x is a number starting at 1. Make sure you do not overwrite an existing entry)
Item Data <DLL path and file name>
Item Type STRING