The form action field will have something like this in it:
<CODE>
<form action="other.php" method="post">Firstname: <input type="text" name="name" />Lastname: <input type="text" name="surname" /><input type="submit" /></form>
</CODE>
It is the action which directs you to the otehr page on the clisking of the submit button. If yo ulook closely at the form code (select source) their will be an email address already inserted into the code. You would need to post the source code (to be fair it ought to be pretty obvious when you examine the code where the email address is being used and if I wasn't so tired I'd probably be able to tell you form memory).
You can modify anything if you know what you're doing ;-)