The website Christian was referring to is a WordPress site. My guess is, that the form also is some WP product. I don't know WP well enough to be able to tell which file Christian has to modify, so let's hope that Ernie Hodge comes by here, he might know.
Russ in Derbyshire England is also a wordpress guru I think he still pops by the forums occasionally.
I hadn't realised the site was wordpress.