How to get rid of white space?

Well I was wondering how to take of the white space from pictures. I like the picture I have for my avatar but I don't like the white box around it.

Any help on how to remove the white box?


Also here is the link to the picture: http://images8.cafepress.com/image/32815388_125x125.png

 

In photoshop, get out the magic wand tool and click the white space. Delete and save as a png. It's the simplest way to do it, although you could pen tool to get more accurate cuts.

 

Thank you so much, I will be trying this out as soon as I get home from school.