Re: Windows 7 Aero (Transparency Works, but Ubuntu is stuck on Unity2D? )
When you go to the login screen and press the cog icon, choose Unity and log in.
Also, is this copy of Ubuntu running directly on the computer, or through a virtualisation program? If the latter, you wont get 3D support.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.