I've you've downloaded Windows 8 release-to-manufacturing (RTM) to your laptop you may notice that you don't have any support for multi-touch gestures. Technology weblog CNET News discovered that until Windows releases official multi-touch drivers for Windows 8 installing the Windows 7 drivers from Synaptics will restore functionality.
Oddly enough the Windows 8 Release Preview included Elan alpha touchpad drivers so that early adopters could use multitouch but that was not carried over to the RTM release. Thankfully the Synaptics drivers for Windows 7 work fine until Microsoft gets around to an official release.
How to enable touch-pad gestures on Windows 8 laptops [CNET News via Nirmal TV