New Background

Ok, so I just found this awsome website that has way cool, free blogger templates (http://www.pyzam.com/bloggertemplates). The things is, I don't want to change the way my blog is set up, I only want to change the background. If I try to use one of their templates by copy and pasting the html code (like they tell you to do) then I lose all my extra stuff like my links to other websites, my site counter, my playstation, etc. because all of their really cute blogger templates have only your blog, your 'about me' section, and your blog history. So if anyone knows (maybe you jenna) how to insert only the html code for the cool background then let me know. I'm wondering if somehow there really is a way (that's not too difficult) to keep the code for all the page elements that I created while just 'inserting' the code they have for their cool backgrounds. Hm! Maybe there's some other website out there in the universe instead of pyzam that can do that for me. The search is on.