Desktop Not Working in Internet Explorer

Desktop Not Working in Internet Explorer

I am running Windows 7. When I click the zoho desktop I am not seeing all the apps on the screen just mail and docs stretched all the way across the screen.  I also do not see the help and settings tabs in the upper right portion of the screen. If I click on an application icon on the left like "tasks" it goes to that application ok but when I return to the desktop application it does not give me the full desktop.

 Zoho Desktop works fine in Firefox 3.5 with windows 7. 

Thanks for you help