1. Go here: http://cbs.sportsline.com/photos
2. Find a picture you want to use, for example, this:
http://images.sportsline.com/u/gettyima ... _lower.jpg

3. See at the end of the link...the words lower? Change lower to 1024x768
4. Result:
http://images.sportsline.com/u/gettyima ... 24x768.jpg

I learned this from a tutorial on a graphics forum, so don't credit me...