Cleaning of GroupWise Messenger chat history is a needed feature.
Stupid to respond to oneself.... does that indicate insanity???
However, once I read how to add to CCleaner, I created and tested the following:
[GroupWise Messenger]
LangSecRef=3021
Detect=HKCU\Software\Novell\Messenger
Default=True
FileKey1=%userprofile%\Local Settings\Application Data\Novell\GroupWise Messenger\history\%user%|*.*
Just add the above text to a new (or existing) file C:\Program Files\CCleaner\winapp2.ini