Yes the formmail script has 3 hidden fields, recipient; subject; redirect. The email field must be named email. It is the very standard formmail that almost every server I have ever been on uses.
Also, I had bought validation toolkit and was told this product supersedes that extension so I upgraded, but I am absolutely unable to use the extension to validate any form that was formerly able to be validated by Toolkit. It doesn't even see the form on the page. What's up with that?
Sorry I can't give you a URL for the CSS issue; I needed to actually get the form working so I just hand-coded it so I could keep the client happy. I like the concept of this extension but it feels more like beta-ware than a shipping product, particularly its inability to see hand-created forms on any pages that weren't made by form-builder itself.