Aero effect is one of the amazing effect in windows vista , if you have desktop window manager clubbed with your windows vista edition you can enjoy the aero effect in vista.
What is DWM?
DWM (Desktop Window Manager ) previously known as Desktop Compositing Engine or DCE) is a compositing window manager, introduced with Windows Vista, that enables the Windows Aero user interface. DWM requires graphics cards supporting DirectX 9.0 and Shader Model 2.0.
But if your graphic card does not support directX 9.0 and Shader Model Technology, you may not be able to run aero effect.
But you can still run aero with your unsupported graphic card with TweakVista
Let’s see how can you run aero effect then.