How to configure public folder in Exchange server 2007

1. Create a pulic folder
open Exchange Management Console
=> Public Folder Management Console
=> Default Public Folder
=> New Public Folder(from right-click menu)

then follow the wizard to create a public folder. Fox example give it a name Test, so the public folder path will be "\Test";

2. Use the Exchange Management Shell to add public folder permissions for a client user
open Exchange Management Shell
=> Run command
"Add-PublicFolderClientPermission -Identity "\Test" -AccessRights Owner -User TestUser"

This will give user "TestUser" the "Owner" accessRights which has full permission of the public folder;

More info please go to:
http://technet.microsoft.com/en-us/library/aa998834.aspx