Sync Center
This feature is included in the following editions of Windows Vista:
The Sync Center is a convenient central location in Windows Vista from which you can manage data synchronization between PCs, between PCs and servers, and between PCs and devices. The importance of this capability grows all the time as the range of computers, devices, locations, and data sources has exploded.
In Sync Center you can initiate a manual sync, stop an in-progress sync, view the status of all current sync activities, and receive notification of the need for conflict resolution.
Though it unifies your various sync activities, please note that Sync Center does not replace third-party sync tools or functionality. For example, a Windows Mobile device will still use its own infrastructure—Windows Mobile Device Center—to perform the actual synchronization of data with a Windows Vista computer. If you want to change the granular sync settings for any specific relationship, Sync Center directs you to the Windows Mobile Device Center or, in the case of another company's device, to the data management settings for that device.

The Sync Center.