You are now in the "BES Admin Corner" section of this forum.
Exchange Server 2008 running on a Windows Server 2008 (X64) platform
I guess you mean Exchange Server 2007
Have you checked the wireless calender sync in both directions is switched on?
You don't need the Exchange Management Console on the BES server. You should install the MAPI and Collaborative Data Objects 1.2.1 on the BES server.