Right-tap the virtual machine and select tweaks to access its tweaks.
Click over to the Display category and activate the Enable 3D Acceleration checkbox.
You must also increase the video memory slider to at least 128 MB.
Youll need the full 256 MB if youre using multiple monitors with your virtual machine.
Once the virtual machine is running, tap the Devices menu and select Install Guest Additions.
pick the Run option in the AutoPlay window to launch the installer.
Proceed through the installer until you reach the Choose Components window.
When you do, hit the Direct3D Support (Experimental) check box.
The basic Direct3D driver doesnt support Aero, but its theoretically more stable.
However, we havent had any issues with the more experimental driver.
Click Install and VirtualBox will load the guest additions and experimental 3D driver in your virtual machine.
Youll be prompted to power cycle your virtual machine after installing the drivers.
However, Windows Aero is not enabled by default.
If you want to enable Windows Aero, right-click your virtual machines desktop and select Personalize.
The default theme is Windows 7 Basic, which doesnt use Aero.
Scroll up in the Personalization window and select one of the Aero themes, such as Windows 7.
Aero will be enabled.
