can anyone tell me how to resize a photo in cs2? any help will be apreciated. Thanks

Here are some of the group photos. They have been down sized and cropped but nothing else. (With the exception of the one that says final edit) On my monitor they look dark, but when I print them they look ok. I have to re-adjust my monitor. http://good-times.webshots.com/album/558469290RuQExc This is...