(trust) Pen Tablet: -Map to screen-

I bought a Trust pen tablet a while ago and I’m happy with it when I use it on my old computer at home. But here in my dorm room where I can actually use graphics software I have a pc with 2 screens and everything I draw is stretched vertically: a circle becomes a wide oval etc…
I guess this is because the aspect ratio of my “desktop” is twice as wide as the aspect ratio of the tablet.

I heard that with Wacom tablets you can map the tablet to a specific monitor or area or window or whatever.
Does anyone know if there are any tricks or software so I can do this with my trust tablet? I would use the tablet every day if it weren’t for this stretch thing… :*(

Thanks a lot!