10
you'll need to unzip xoops2-mod_wfchannel_v1.07.zip to your local drive.
Whatever folder it unzips too, start drilling down until you get to just the wfchannel folder.
that's the folder that needs to be pushed up to the server.
The actual folder that needs to be uploaded to your server (under the modules directory) is called, simply, "wfchannel"
hope this helps.