I have over 60 photos on here. I don't really know about the scanning dpi - I did the scanning at the Kinko's Copies place where they have computers because I don't own a scanner. If there's a Kinkos near you you might try it. I didn't do anything unusual when scanning. But I do own Paint Shop Pro 5.0 ad I sharpen and adjust the gamma correction, brightness, hue, etc just slightly as needed. Yes, i have had many rejected due to either scan quality or original picture quality.
Bruce Leibowitz - Jackson, MS (KJAN) - Canon 50D/100-400L IS lens