Syncronize Your PDA with Microsoft Activesync
"Exchange ActiveSync® in Microsoft® Exchange Server 2003 lets devices such as a browser-enabled cellular telephone or a Microsoft Windows Mobile® powered device access corporate information on a server that is running Exchange 2003. Exchange ActiveSync is a data synchronization service that enables mobile users to access their e-mail, calendar, and contacts and retain access to this information while they are offline."
Visit Microsotf Website for more information. {read more}