Configure the Scroll Ball of a Mighty Mouse in X11R6.8.2

[Martin Alejandro Paredes Sanchez]

Hi:

The problem is that, when I move the scroll ball verticaly, nothing happen, 
but when I move it horizontally, X get the vertical moves.

How can I configure the horizontal and vertical move of the scroll ball?

FreeBSD detected as:

# dmesg | grep ums
ums0: Mitsumi Electric Apple Optical USB Mouse, rev 1.10/1.08, addr 2, iclass 
3/1
ums0: 4 buttons and Z dir.

Here is what I have done till now, since I want to use it in X and FreeBSD (to 
copy and paste), I added

usbd_enable="YES"

to my /etc/rc.conf, so the "moused" utility is up and running

# ps axw | grep mouse
  268  ??  Is     0:04,44 /usr/sbin/moused -p /dev/ums0 -t auto 
-I /var/run/moused.ums0.pid

and the copy and paste works fine, since it has 4 buttons, no need to emulate 
the third (middle) button.

So, in X I configure the sysMouse protocol:

Section "InputDevice"
        Identifier  "Mouse0"
        Driver      "mouse"
        Option      "Protocol" "SysMouse"
        Option      "Device" "/dev/sysmouse"
        Option      "Buttons" "6"
        Option      "ZAxisMapping" "4 5"
EndSection

maps