Visualization Screen Resolution

[Sundansyr]

Yes, using AVS.

I can use 'fullscreen' fine, but when I select it I get a block of low-res (640 x 480) graphics anchored to the left side of my primary display with a 1 inch margin top and bottom and a 2 inch margin on the right.

How do I tell AVS to use my current resolution (1024 x 760)and correct fullscreen mode?