New solution found! Almost...
So I tried the tricks installing KMW 6.2.2 and then restarting, but no matter what it did, it could not find my driver for my mouse, so I only got the basic Vista mouse options screen. With this, only the scroll wheel and left/right buttons work, not buttons 3,4, or 5.
The new solution, almost is to install Intelipoint. Pick almost any mouse that has at least the same number of buttons as your Kensington Mouse, if not more. This almost works because you get the basic functions of buttons 3 and 4 (forward and back), but you cannot program them. So, right now, my little front button thinks it is number 3, not number 4 and vice versa. Even if I go into Intelipoint and change the task for the button, it still does not change on the mouse. But at least I have more functionality.