I found a great little freeware program to re-size photos. You can reduced the size for as many photos as you want and all at one time. It was quicker for me that way.
After you install the program, you just go to the photo file, right click and scroll down to "resize pictures". It's simple band handy to have! Just type in the following keywords online and when you are at imageresizer.codeplex, you can scroll down and it will even show you a snapshot of what you see when you right click.
I've used it for a year or so now.
Key words: image resizer for windows