I just read Rob Tiffany’s (a Technical Product Manager in the Microsoft Windows Mobile group) blog and noticed he has a new book out (with a very long title :-)…
Windows Mobile Data Synchronization with SQL Server 2005 and SQL Server Compact 3.1
If you need to use SQL Server held data with your WiMo smartphone. This book might be a good place to start looking (haven’t read it myself, btw).