Secure Form?

I’ve tried forms befor but every time i never seem to get them right,

what im trying to do is make a form that collects personal detail from clients: Name, Address, credit card details and so on. and then when the sumbit this form it sends me an Email with the information they have put in and sends them one too basicly a recipt as such. but it must be secure, ino my web host accepts pretty much all coding languages, so does any one know how i can do all this?

Thanks Martin

I use Dreamweaver 8 btw