This works for my Lenovo ThinkPad R61 (7732-CTO) running Archlinux.
Create a file in /etc/hal/fdi/policy called mouse-wheel.fdi with the following:
<match key="info.product" string="TPPS/2 IBM TrackPoint">>
<merge key="input.x11_options.EmulateWheel" type="string">>true</merge>>
<merge key="input.x11_options.EmulateWheelButton" type="string">>2</merge>>
<merge key="input.x11_options.YAxisMapping" type="string">>4 5</merge>>
<merge key="input.x11_options.XAxisMapping" type="string">>6 7</merge>>
<merge key="input.x11_options.Emulate3Buttons" type="string">>true</merge>>
<merge key="input.x11_options.EmulateWheelTimeout" type="string">>200</merge>>
</match>>
Kindly ignore the duplicate tags.
Now, if you click and hold the middle mouse button, you can use the TrackPoint to scroll vertically and horizontally. As of June 8, 2009, I am still unable to get my touchpad to work ><
