Desktop Switcher Problem

[Dennis J. Tuchler]

Somehow, I deleted the desktop-switcher from my toolbar.  It had the four 
desktops arranged like a square (two up, two down) and each square disclosed 
the icon of the application open in that area.

I tried to replace it, but all I got was a desktop switcher which has no 
windows for icons and arranges itself in a horizontal row.  The properties 
menu for that switcher has no configuration options.

How do I get back the original desktop switcher described in the first 
paragraph?

Thanks

dj tuchler