- Open NetInfo Manager and authenticate.
- Create a new subdirectory in /config/SharePoints/ (click on config, then on SharePoints, then select Directory -> New Subdirectory).
- Set the name value to be what you'd like the share to be called (double-click on the Value column next to name).
- Add a new property (Directory -> New Properyt) and name it directory_path.
- Add a new value for directory_path. The value needs to be the path of the folder or volume (for example, /Users/username/Pictures).
- Save your changes in NetInfo.
- In the Finder, set the privileges on the folder or volume you'll be sharing. Do Show Info, then Privileges, and pick what you like -- Drop Box, Read Only, etc.
- Stop and restart the AFP Server from the Sharing preferences panel.
- Connect from a client and they will see the new share.
[Editor's note: This is probably the most useful tip I've seen in quite a while! I just tried it, and it worked exactly as described - my "Pictures" folder became available as a read-only volume to the AppleShare network - slick!. I wonder how difficult it is to wrap a GUI application around updating NetInfo?? That would be a killer OS X app!]

