> I keep my calendar in a public folder in Exchange, but this is
> available offline. Is there any 3rd party software that will allow
> me to sync on and offline to my PDA
Depends on your PDA. If you use Palm, see Chapura PocketMirror Pro or
Pumatech Intellisync.
You can sync a PF to your offline folders in Outlook, you know - just have
to drag it to your Public Folders\Favorites.