How to set up synchronization with MobileMe
In Notebooks' settings, turn on "Sync to WebDAV" and add your details in "Change WebDAV Settings".
MobileMe users only need to fill in their username (without @me.com) and password.
You can optionally enter a start directory for Notebooks (the default is Documents). If a start directory is given, it must already exist on your iDisk.
Notebooks will create a folder "Notebooks" at the specified directory and use that to sync its contents.