How to enable Aero in a Windows 7 virtual machine (VirtualBox Tutorial)

if you want to enable aero in your windows 7 virtual machine in virtualbox, then this tutorial is the one for you!

[alabama]

I get an error saying that the video card is missing a WDDM driver for 7, and vista has the driver but I still can't get aero.

[AAON]

After I did, I go to control panel and I clicked on aero theme and gave me a black screen