Contact Form Submit to 2 places?

[BaileyBoy]

I have a contact form on my site that has a submit yes/no to receive updates from me. Up to now I have copied and pasted the
YES's from the emails to a excel doc. NOW I want to use a line of code from a third-party that sends the users e-mail address
directly into a subscribed database (see WHAT I WANT TO ADD below).

Here's the rub: I want the original contact form to come to me as usual, AND have the email address go to that third-party with one SUBMIT click
if permission from the user is given.

Any thoughts?

<!------ORIGINAL---------------->

<form method="post" onsubmit="return checkFields(this,this.group,this.fax,this.question)">
<input type="hidden" name="to" value="<?print $to?>">
<input type="hidden" name="subject" value="<?print $subject?>">
<table>
<tr>
<td>*Your Name:</td>
<td><input size="30" name="name"></td>
</tr>
<tr>
<td>*Your E-Mail:</td>
<td><input size="30" name="email"></td>
</tr>
<tr>
<td>Group/Organization:</td>
<td><input size="30" name="group"></td>
</tr>
<tr>
<td>*Phone:</td>
<td><input size="30" name="phone"></td>
</tr>
<tr>
<td>Fax:</td>
<td><input size="30" name="fax"></td>
</tr>
<tr>
<td valign="top">Question/Comments</td>
<td><textarea name="question" cols="30" rows="3" ><?print $question?></textarea></td>
</tr>
<tr>
<td colspan="2"><br /><br />
<table>
<tr>
<td valign="top"><input type="radio" name="optin" value="Yes" checked="checked">&nbsp;&nbsp;</td>
<td>Yes, I would like to receive information from your organization.</td>
</tr>
<tr>
<td valign="top"><input type="radio" name="optin" value="">&nbsp;&nbsp;</td>
<td>I do not wish to receive information from your organization.</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2"><input type="submit" name="contactUs" value="Submit"></td>
</tr>
</table>


<!-----WHAT I WANT TO ADD-------->


<table>
<form action="http://optin.verticalresponse.com/" method="post">

<input type=hidden name=fid value="2556Ib3942">
<tr><td>Email Address:</td><td><input type=TEXT name="email_address"></td></tr>

<tr><td colspan=2><input type=checkbox value=1 name=optin>I want to receive mailings from your organization</td></tr>

<tr><td colspan=2><input hspace=5 type=image border=0 src="http://oi.vresp.com/join_now.gif" name="form_submitted" value="submit"></form></td></tr>
</table>

[vitalise]

BailyBoy,
You could put the second form in an IFRAME and then use javascript to submit it before you submit the original form.
You could of course just do the second post from the server script (whatever you're using) that handles the first form.