sarah the mailto: command goes in your forms action field.
<form name="my form" action="mailto:someone (AT) domain_name (DOT) com"
enctype="text/plain" method=post>
</form>
This is not the most reliable or secure way to send information. You
should investigate using some sort of server language but if you dont
know any you can always use a pre-made perl script.
If you have a cgi-bin on your server you can undoubtedley implement one
of the from mail scripts. "FormMail" is one of the easiest to use. There
is a tutorial how to get up and running with it here:
www.vendel.info/tut