Flash Form?

Hello there.
Im doing my website and I did a simple form in Flash MX 2004, Im following this tutorial for this. Anyways my point is that I need to know which variable do I need to received the username, email address and comments from the people. so I can received this information on my email. The guys in this tutorial talk about that each server have a dofferent CGI script. I check out this http://formmail.dreamhost.com/ but it doenst make to much sense this information to me? there anyone here that have done this before using Flash MX ?

thanks in advance.