We are now ready to start synchronizing remotely! Simply open ActiveSync on your Pocket PC and then click the Sync button. You should now be presented with a screen asking you to log onto your desktop PC.
Figure 12 Specifying Credentials During a Synchronization Operation
Go ahead and enter your Windows user name and password, as well as domain information (if applicable) and then click OK.
After doing this, you should see your Pocket PC synchronizing with your desktop PC just as if it were connected via your USB cable!