You can follow the directions for resizing pictures here:
http://www.quiltingboard.com/qb-help...g-t166655.html
Or you can pull the manual out for you camera and change the setting on your camara so the file sizes aren't so large when it takes the picture, which is what I did so I don't have to worry about resizing the file size of my photo. You only need such high resolution if you are planning on printing your pictures out. For sharing them on line you can change the setting to a much smaller file size (you are reducing the number of pixels per picture to something like 800 x whatever)