I just wanted to post a reply to my own question. If you want to resize your small images then view this post: http://www.zen-cart.com/forum/showth...handler+resize

A user, Equin, has a simple solution... just download all the original images from the images/original folder, then resize them using the program XnView to the desired size and then reupload them to the images folder. And it's as simple as that!