I've already gone to the facebook developers page about this, and almost everything works when I use the resource they give me, which only requires that I provide the URL to be liked before generating the code. The problem is that it takes the website's image instead of the product's image, and I was wondering if someone knew how to edit or add to the code Facebook Dvelopers gave me so that I can choose the image that will appear on everyone's facebook walls when they choose to share. Here's the inframe code:
<iframe src="//www.facebook.com/plugins/like.php?href=http%3A%2F%2Fwww.4-hmall.org%2FProduct%2Fclubsupplies-bags-totes%2FBAG2.aspx&width&layout=standard&action=recommend&show_faces=true&share=true&height=80" scrolling="no" frameborder="0" style="border:none; overflow:hidden; height:80px;" allowTransparency="true"></iframe>
Not 100% sure this is what you are looking for but it sounds like it might be.
Try using the FB Image Meta Tag on your page
<meta property="og:image" content="img/facebook.png"/>
here is a good article about all the FB meta tag stuff
Use facebook's og:image meta tag. If it does not work check that facebook has not already cached the header image before you added meta data. Put your URL into this site and facebook will help you out: