Great article. The mib files are not in the linux downloads. To get the mib files download the nlmwin file.
Then you can find them in the agents - snmp directory.
The files are:
Rename them to lowercase though.....
It looks like they're using the same mib files for quite some time now, but i'm not sure of the gwapi.mib. This means that u can also use the mibs out of the older groupwise versions. They should still work :D:D