Oneirc queston

[Tom Masterson]

I upgraded my laptop using do-releas-upgrade (which is how I normally do 
this) and found unity totally inaccessible probably because it was in 3d. 
So I installed gnome which works but I would like to try unity and I have 
more computers to upgrade.  So the question is how do I get it to start in 
unity 2d doing an upgrade ot a fresh install?  Also is it possible without 
sighted help.  My wife had to help me switch to gnome.

As a side note orca does not start automatically in gnome as I have read 
it does not in unity either.  Is there a solution for this (I have not 
read the entire archive)?

Thanks
Tom