getting to the desktop

[Glenn Ervin]

Hi,
I am running Ubuntu on several systems, but on the live CD, it is running on 
the system I wrote in about with the troubled partitions.
Anyway, I am using Orca, and it's Ubuntu 10.04, and I have noticed that with 
this live CD, I cannot get back to the desktop when I use control + alt + 
tab to get to the panels.
When I get to the top panel, and arrow, looking for the icon for my 
wireless, I cannot then get out of the top panel.  Control + alt + D does 
not work any longer.  I try moving to the desktop with the mouse, and it 
reads the desktop items, but the active cursor is still in the top panel, 
even if I click on something with the mouse.
Thanks for any help.

Glenn