Subject: The split or toggle button that shows routing does not appear on dispatch window. Why?
Category: Misc
You need to change the screen resolution to 1024x768 minimum.

Click Windows Start button, choose Control Panel, then Display. Click on the Settings tab and change the screen resolution. 

An Alternative way to display the screen properties window is by right clicking the mouse on an empty space of the desktop, then from the pop-up menu choose properties, then follow the above instructions.