These are the GroupWise 5.5 snapins for NetWare Administrator (NWAdmin). They are to be used with the GroupWise API Gateway.
To install, make sure that there is a drive mapped to the SYS volume on the server. Extract the files to a temporary directory. Double click on the Install.exe program and follow the prompts.
Download url: /coolsolutions/tools/downloads/apisnapins.zip
After installing above, download the win32.zip file, and extract into the install dir.
Disclaimer: As with everything else at Cool Solutions, this content is definitely not supported by Novell (so don't even think of calling Support if you try something and it blows up).
It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test, test, test before you do anything drastic with it.