Have you read the article here on uploading images? What I do in a nutshell: scan, crop, adjust curves or levels, touch up as necessary with rubber stamp tool, resize to 72dpi and max dimension 450 (height or width whichever is larger, then filter -> sharpen or unsharp mask (whichever looks better), and last but not least save as jpg and choose max quality that keeps image size under 100k.
marcus, i'm pretty sure that my problem is my scanning ability. everytime i shrink stuff down small enough to load, it looks like crud. but, i will try the 250 rating and see what happens. i'll let ya know.