The dpi value is not relevant for computer generated images, and can effectively be adjusted post-rendering or post-sampling in a paint program. It only really acts as a "hint" for the printer to convert pixel dimensions into inches, and it is really more than an number embedded in the image file or data. At the end of the day, the only "real" values are the pixel width and height dimensions. The best solution is to render a single image in the maximum resolution and, as smiller1 says, scale it in a paint program according to the specific image size/dpi demands of your printing solution, if you cannot simply adjust the print size of your maximum resolution image appropriately. Bill