Un-installing Exchange system manager

Hello,

When I went to upgrade MAPI/CDO version on our Blackberry server 5.0.3, below error was recevied,

Messaging API and Collaboration Data Objects 1.2.1 cannot be installed with this version of Microsoft Exchange

BES tells to either uninstall Exchange System Manager or remove current MAPI/CDO version.

But since I did not find MAPI/CDO installed in Add/Remove programs want to uninstall Exchange Manager.

want to know how to uninstall Exchange System Manager on BES server.

Thanks,

Mihir