Well, I know how to do this with ASP if that can help you.
I'll give you the ASP source if you can tell me this:
º are you sending the data to this page via Querystring or HTTP Post?
º are you restricting the mailto addresses to certain ones (EX. e-mails always e-mail to the administrator), and if so, what are they?
º what form items are you sending, what are their names, and do you want some parts of the e-mail auto assembled? (EX. send "eto"; "efrom"; "esubject"; and have the message body auto-created)
º are you on a microsoft-based server?