If you are needing to resize a bunch of pictures at the same time there is a neat, free, program that I have started using to get this done. It is called fotosizer. You can resize as many pictures as you want by selecting them from your folders or just tell it you want an entire folder resized. You can also change multiple pictures to back and white in just a few clicks. This has saved me so much time I thought I would pass it along.
We live under the illusion of thinking that if we just know what to do that we will inevitably do