I have a Dell XPS13 and just upgraded to Windows 8 - I am constantly triggering the Charms bar just using the trackpad as I have for months. It has a Cypress trackpad but nowhere in the settings does it mention Windows 8 gestures.
I've read How can I disable the Windows 8 charms bar? and Modify or disable Windows 8 swipe gestures on touchpad / laptop - neither of these help. I would just like to turn off the trackpad gesture.