hi there again,
yeah, knoppix is always a good idea in such case but i would give another try.
when you write
Options "Buttons" "6"
I think you should put the ZAxis "5 6".
From the top of my head, i think it is a kind of rule the the last two are for the scroll.
This option can always be changed with a little help of
I advice a read at
you can play with the buttons... Ex.
xmodmap -e "pointer = 2 4 3 5 1 6"
will mess with your mouse.