[Eikinskjaldi]

vbulletin uses a templating system, which means the actual html lives in a template (in the db), and vb uses a substitution system whereby variables in the template are replaced by values. You can see where these templates are used by finding lines like fetch_template(foo) or eval(fetch_template(foo))

in the db there might be a template called whee which contains
<h1>$bar</h1>

an example script.php might contain
$bar = 7
eval(fetch_template('whee'))

In short you need to find the poll template and mod that, not the code.