Heh, wish I could say the same. Mouse functionality is not my strong point...
I've tried this myself, and it works, after a fashion. I've got one of those Synaptics touchpads with the 4-point scroll button in addition to the standard 2-button mouse. After doing the above, the buttons now work, but up is treated as a left-click, down is a right-click, and left/right both bring up a task switcher.
Now I'm guessing it's because it's a 6-button mouse, not a 5-button mouse, but Synaptics hasn't provided any drivers, and getting Linux support from Compaq is like getting blood from potatoes. Anybody else have a solution to this minor annoyance? (I have a USB mouse that works fine, I just don't feel like using it all the time)