AMD has released Catalyst 8.8 drivers. You can pick them up from http://game.amd.com. These new drivers bring with them a couple of new features.
One of these new features is Hybrid Graphics support for Windows XP users. To make use of this feature users will need an AMD 780G/780D integrated graphics motherboard and a Radeon HD 3400 series or HD 2400 series GPU installed on a separate graphics card.