Touchpad scrolling region

[Joris Dobbelsteen]

Dear,

I'm looking on tuning my IBM/Lenovo T60 touchpad. I want to configure 
the region used for scrolling, in order to make it (a lot) smaller.

Does anyone know how to configure this?

The edges of the touchpad can be used to scroll though a document, 
rather than moving the mouse. This is a quite useful feature I would not 
like to miss, but the configured region is a bit wide, which causes me 
to regularly use it, even though I'm not intending to.

- Joris