How can I configure the express keys for my Intuos drawing tablet?

Solution 1:

After some searching around, I found this http://ubuntuforums.org/showthread.php?t=1515562

It seems that the buttons are like a mouse's. So there are three buttons for left, right, and middle click, and four buttons are for scroll. Buttons 1 and 2 are the buttons on the upper left of my Intuos and the Buttons for the upper right buttons is Button 8 and 9.

You can get a better explanation from the link.