Start/>
Control panel/>
Sounds and Audio Devices/>
click on "SOUNDS" tab and then in the "PROGRAM EVENTS" section scroll down to
"Microsoft Active Sync" - (1) Connect confirm and (2) Disconnect confirm
select (1) and click the SOUND drop list and click on (None). do the same with (2) and then click OK
http://forum.ppcgeeks.com/images/icons/icon7.gif
That's all. Problem fixed, I was annoyed by the stupid thing also. You can also choose a different sound for each (1) and (2)