Hi Brian, the image will be rendered as a texture map in MoI, and texture magnification or minification filtering will be applied in order to stretch the image up or down. This is done by the video card using a method called "bilinear interpolation".

The easiest way to get a clearer image should be to have a higher resolution image - if you have more pixels in the image it will not be so grainy as that.

What is the overall pixel resolution (just in direct pixel count, not any "dots per inch" measurement) of the image that you're using?

- Michael