Problem with templates - help!

I'm trying to get my poll pickup a custom template with this line of code:

$php_poll->set_template_set("no_header");

"no_header" being the name of the new template of course. I pasted code in the results and comments section and the poll actually works with the default template if I don't add the above line of code. When I do include it the page design goes simply screwy and instead of the poll I get the information from another php include - a footer at the bottom of my page.

Any suggestions? Thanks!