I have wanted to have a mailto form in my site for a long time. I can get it all done, but when i click submit, it just brings up an empty new e-mail, the only thing the form actually does is put the "to:" address in for me. What am i doing wrong that my form will not just directly send the message to me when a user clicks submit?

if you post your code, it'll help a lot.

To have it not bring up your email program, you'll have to use an email from Bravenet (http://www.bravenet.com) or Freedback (http://www.freedback.com/index.php)

....or search Google (http://www.google.com) for.... free+email+forms

You mentioned a from if you want a form to work you will need to have a form processor cgi script or similar working on your server and set up the form accordingly. Its the best way to achieve a reliable form.
If you want a subject to appear when clicking a mailto link do this
<a href="mailto:you@email?subject=yoursubject">E-mail you</a>

remember a mailto form will not always work and depends on such things as the users os, browser and email client.

You could try (I can't remember if it works) this:

<form action="mailto:you@email.com">