PocketMirror is included with the Palm Desktop software
and allows HotSync operations to synchronize data between
the Palm handheld and Microsoft Outlook. You may have
already installed this conduit when you first installed
the Palm Desktop software. If you have not done so, or are
not sure, see "Installing the PocketMirror Conduit for
Microsoft Outlook" in your Palm documentation for more
information.

To switch from using Palm Desktop to using MS Outlook (or
vice versa) you will have to re-install the Palm Desktop
software. During the installation process, you will be
again prompted to choose which Personal Information
Manager (PIM) you want to use, Palm Desktop or MS Outlook.

Hope this helps :)