HELP Searched but cant get clear answer to Fake Iframed email submit referer.

Hello, I have been searching for 2 days now and I've read tons of threads all with different responses.

I have a page with an iframed email submit and what I want to do is Fake the referer that the email submit sends the CPA company and they cant tell.

I cant find the right code, I have Ghost CPA but the code it generates doesnt work. :S