First figure out what your resolution (dpi) is on your image.
If you have a 72 dpi image and are trying to convert it to a 300 dpi image that will not work.
It maybe best to shoot at very high quality setting in your camera, preferably TIFF. TIFF will normally output to a 300 dpi image, resulting in excellent print material. It is always easier to scale down a high resolution image (300 dpi) as opposed to a low resolution 72 dpi jpeg.
If you look in your digital camera manual there will be an instruction guide for what the best output would be for either print or web.
(Message edited by Pierce Bronkite on October 28, 2003)