I recently, as in today, bought a pretty cheap (but pretty) wireless mouse from HAMA, the Hama 00050418 Knallbunt.

Two of it's buttons are used to change the DPI and the Browser.
I want to at least try and change one of these buttons to something else.
That is why i set out to get the driver for that mouse, but alas it isn't listed in any of hamas lists.

Is there a way to change that?
Some kind of programm that lets me choose and change as i wish?