The BWT Tray Icon Does Not Appear on Windows 7
Windows 7 does not display application icons in the tray or taskbar unless explicitly enabled by the end-user.
To enable the BWT Tray Icon on Windows 7, click on the up-arrow on the left-hand side of the tray:
Click on "Customize"
Locate "BWT Application" in the icon list.
Select "Show icon and notifications" from the Behavior dropdown list.