Mini Text in Trisquel Mini

When I hook my Trsique Mini OS running on a Mini computer (Mini Dell GX 150) to a High Definition Sony TV through its VGA Port, it automatically adjusts its resolution to the huge resolution of the TV. The text on the Desktop, in the Menus, almost everywhere is so small I can barely read it. I have tried just re-adjusting the resolution, but the TV does not adapt. It begins by fitting the TV perfect at the highest resolution. When I shrink the resolution, instead of the TV blowing the image up to full size, it places the smaller image in the center of the TV with blackness around it and the text and everything else is still the same size as before; now it's just in a smaller screen inside the blackness.

Is there I was I can take the text size value and make it larger in Trisquel Mini so that I can read it on such a big screen? I am new to Trisquel Mini, and do not really know. And, would this be the same method for regular Trisquel should it do the same thing?

Thank GNU.