Using Dexpot Apple-Like on Lenovo X200? Perhaps Fn+TP?

[rotation]

Hi all.

Id like to use Dexpot with my Lenovo X200.
Is there a way to switch the Desktops by pressing Function key, Middle Trackpoint Button and then the Trackpoint Left/right?

The point is: I do not have a Touchpad, but a Trackpoint - good thing, because I always deactivate the Touchpad on Lenovo Laptops.
On Apple Laptops there is a Multitough Mousepad, wich works really great with multi Desktop.
Is there a way to make Dexpot behave like Apple? Using Fn+TrackpointMiddle+Trackpoint?

[Patrick]

Using the Fn key is not possible in general, as the key is handled at the hardware level, not by the operating system.