Do you have any editing software? If so, most of them include the ability to crop a photograph. If not, you can download all types of free programs that will resize photos.
If you have microsoft office picture manager, you can do a very quick and easy resizing of photos. Open your photo in Picture Manager Click "edit pictures" Underneath "change picture size" you will see two options: "resize" (allowing you to resize the photo either with a custom size, a pre-determined size, or a percentage of the original size) "compress pictures" (which reduces the size of the photo and the file size, in 3 different increments) Save your picture and you're done!