Howtoforge shows you how to enable Compiz on Linux Mint 12
This tutorial shows how you can enable Compiz on a Linux Mint 12 Lisa desktop (the system must have a 3D-capable graphics card - I'm using an NVIDIA GeForce 8200 here). With Compiz you can use beautiful 3D effects like wobbly windows or a desktop cube on your desktop. Compiz is not supported on GNOME 3 yet, that's why this how-to is applicable only for the classic GNOME desktop.Enabling Compiz On Linux Mint 12 (GNOME Classic)