wheel & middle button not working

[Rolando Abarca]

Before I recompiled X (to support xv with my Mach64 card, from my
lombard), I had my USB Genius Scroll-Eye working perfectly: both buttons
and scroll in both directions, including the middle button.
Now, it only scrolls down, this is my XF86Config (mouse section):

Section "InputDevice"
    Identifier  "Mouse0"
    Driver      "mouse"
    Option      "Protocol" "IMPS/2"
    Option      "Device" "/dev/input/mice"
    Option      "ZAxisMapping" "4 5"
    Option      "Emulate3Buttons" "yes"
EndSection

anyone knows why it could not be working?... thanks a lot!

regards,
r.a./