TH2Go stretch 4:3 to triple monitors using PowerDesk?

[Ian Brantford]

I am stumped. If I do not install the nVIDIA driver for my GTX 260 card, I get the same type of display as during the BIOS -- a conventional 4:3 display gets stretched horizontally over all three monitors. After installing the driver, I can only pick modes with unstretched pixels. Normally, this would be wanted, but I want to force the stretched mode for some unsupported games where I can manually mess with the field of view, like FlatOut 2.

The documentation mentions Independent Mode vs. Stretched Mode, but I cannot find any way to control this. Internet searches lead me to believe that control over this can only be done with other Matrox products, despite the fact that the TH2Go hardware clearly can do what I want.

Is there a way to force a horizontal 3:1 pixel stretch?

Thanx
Ian