Haven't updated your laptop's trackpad driver
lately? Then you may well want to consider doing so, at least if your laptop is equipped with a Synaptics trackpad. As a user on the Hardware Zone forums discovered, the latest Synaptics driver seems to enable multitouch gestures on older laptops that didn't previously support them, including two-finger scrolling, and three-finger click. What's more, while the drivers
themselves come from HP, they should work just fine on other laptops with a Synaptics trackpad. Hit up the link below to try it out for yourself.
Source: Synaptics driver enables multitouch gestures on older trackpads -- Engadget
p.s. working on my P7805u perfectly.
Download directly from HP:ftp://ftp.hp.com/pub/softpaq/sp47501-48000/sp47815.exe