How do you use the touchpad circular scrolling on a Dell Laptop?

I just bought a new Dell laptop and it does not have a scroll button!This is driving me nuts but for the price I got this computer I cannot complain. It says it has circular scrolling but I cannot figure it out. I have tried the circles and it is enabled in the settings already. HELP!How do you use the touchpad circular scrolling on a Dell Laptop?if it has a red or orange ball some ware between the keys you move it around with your finger if that don't work go to wal mart and buy a mouse for like 14 bucks