one thing i find helps is to go on google, click images, type in a keyword for what kind of pictures you want and click search. when the results page loads up there should be an option to change the size of the pictures you are viwing, change that to small. then look for images you like that meet the requiremnt for the site, it is 65x80 pixels, and it will say underneath the pictures on google how big they are.

hope this helps