Ubuntu 10.10 Does Not Boot Into Gnome

[northshield <northshield skynet be>]

Hi Gnome Developers,
Can you tell me how to reconfigure my Ubuntu desktop so that booting the
computer results in presentation of Gnome?  Presently the result of
booting is display of logon for the admin account used to install
Ubuntu, not Gnome desktop.  Ubuntu v10.10 was the result of upgrading,
through Update Manager, from the previous release.
Sincerely,
-Tom Northshield