PocketMac Pro syncs Mac OS X data (Entourage/iCal/Address Book/Mail.app/Now Contact & More) to Windows Mobile Pocket PC devices via Bluetooth, USB or Airport.

synchronize your contacts, calendar, tasks, email and more between the Pocket PC and Entourage/ iCal/ Address Book /Mail.app on OS X 10.2.6 or 10.3.

Synchronize...

Contacts

Calendar

Tasks

E-mail

Word/Excel Docs

iTunes/MP3s

iPhoto

With Mac software such as...

Microsoft Entourage

iCal Calendar/Tasks

Address Book

Mail.app

Now Contact (requires Now Contact)

Microsoft Word/Excel