Julie -

Check your photo software that came with your camera- it usually has some options to reduce the size of the pic. Many software systems also have specific sizing for posting to web-sites.

Even Microsoft Photo Editor has an option to reduc the size of pic (Image-Resize). Sometimes the defalt to change size is by size and not pixels... start hunting around and use the software "help" features to find what you need.

Good luck!
Kiks