User guide - need help with touchpad setup

I recently purchased an Inspiron 17 5000 series laptop, with Windows 7 Pro, and am having a lot of trouble setting up the touch pad and buttons to work the way I want them to. No matter what I try, the touch pad and buttons are too sensitive. If I move the pointer near a folder or file when in explorer a window opens telling me the file or folder is being moved and I have to quickly cancel the operation. If I move the pointer near an item on the task bar, the nearest program opens when I do NOT want it to. I've searched for instructions or a simple user guide and apparently Dell does not feel the need to provide anything but a quick start guide and a hardware replacement manual. Any specific help setting up the touch pad and buttons to work the way I want them to would be most helpful.

Thanks in advance.