make sure you don't make the same mistake I originally did... if you use blogger, make sure you click the "edit html" button before putting the code in! because otherwise the code will just look like a bunch of gibberish! heh...
I use treasury generator by Whale Shark. All you need to do is scroll down to the bottom and it will walk you through it. You put in the treasury number, choose how you want it laid out...4 across, etc. (I use 3 so it fits well in my blog), hit the generate button and the code is ready for you to put onto your blog.