Use TIFF format for any images you plan to print. TIFF is a 'lossless' format where no details are lost from the original image, using more hard drive space. When you have your photo placed in your scanner and are ready to scan, select the preview option. Your scanner will quickly send an image of the photo to your monitor. Now you can adjust the brightness, contrast and color levels to get the image to look just the way you want it before you make the final scan.
Resolution refers to the sharpness of an image.
The higher the resolution, the more dots per inch your scanner uses to reproduce your picture. But the Web doesn't reproduce images as clearly as paper does anyway, so you don't need to bother with high resolution if you're planning on putting your pictures on the Web. All rights reserved.