Enable ThinkPad TrackPoint Scrolling

create the /etc/hal/fdi/policy/mouse-wheel.fdi file with the following content:-

<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.Emulate3Buttons" type="string">true</merge>
  <merge key="input.x11_options.EmulateWheelTimeout" type="string">200</merge>
  <merge key="input.x11_options.XAxisMapping" type="string">6 7</merge>
</match>

that's all.