There are actually two directories for Zimbra Desktop after install:
- the app install directory (C:\Programs\Zimbra\Zimbra Desktop)
- the user data directory (c:\Documents and Settings\{user}\Local Settings\Application Data\Zimbra\Zimbra Desktop)
I've updated the wiki to reflect this information:
ZCS 6.0:Zimlet Developers Guide
ev Environment Setup - Zimbra :: Wiki
The zimlet ZIP needs to be installed into the zimlets folder in the user data directory. To find the user data directory on Windows, if you are using Explorer, you need to be sure to unhide "hidden" folders.
1) Open explorer.exe
2) Browse to c:\Documents and Settings\{your-user-name}
3) If you don't see "Local Settings", go to "Tools > Folder Options" and switch to the "View" tab.
4) There is a section for "Hidden files and folders". Check "Show hidden files and folders"
5) Click "apply"
6) Now you should see the "Local Settings" folder. Continue to browse until you get to the zimlets directory.
7) Drop your zimlet ZIP in place
8) Restart the Zimbra Desktop service