In Windows 7 (which was included on my laptop), I could use the right side of the touchpad to scroll vertically, and the bottom edge to scroll horizontally. In Ubuntu, this doesn't work and I see no setting to enable it. Is it even supported? I miss this feature. I just removed Windows and installed Ubuntu 12.04 beta.
Sony Vaio VGN-NW220F
Search for "Mouse and Touchpad" in the menu, there you will find touchpad settings there, and you can set horizontal as well as vertical scrolling.
On Ubuntu 14.04 LTS , search for "Pointing Devices " in ubuntu software centre , install it and scrolling works perfectly for ALPS touchpads !!