How to center opt in form ?!

[Cheetah]

Hi

I am want to center my optin box with code of getresponse with html code!
The page that i got from someone give you place to put code and need to enter my form detail in html to make pages to be able to work.

The page optin form stay left and is not going to the center;is there someone that can help me with the code to get it to show the form in the center?

the code of page is:

style="text-decoration: underline; color: rgb(179, 0, 0);">YOU</span>
Can<font color="#b30000">&nbsp;</font>Live</font></small></font></b></small></font><span
class="blue style8"> <b><font face="Tahoma"><u><span
style="font-size: 16pt;"> A New, Energized Life</span></u><span
style="font-size: 16pt;"> WITHOUT </span></font>
<font style="font-size: 16pt;" face="Tahoma">ACNE</font></b>
</span> <font face="Tahoma"><b><span
style="font-size: 16pt;">!</span></b></font></p>
</td>
</tr>
</tbody>
</table>
</div>
<address align="center">&nbsp;</address>
<div align="center">
<div align="center">
<table style="border: 3px dashed rgb(128, 0, 0);"
id="table15" border="3" bordercolor="#800000"
cellspacing="1" width="72%">
<tbody>
<tr>
<td> &nbsp;
<p align="center">Optin Box</p>
<p align="center">&nbsp;</p>
</td>
</tr>
</tbody>
</table>
</div>
<table id="table13" border="0" cellpadding="0"
cellspacing="0" width="92%">
<tbody>
<tr>
<td>
<p style="margin-top: 5px; margin-bottom: 0pt;"
align="center"> <font face="Arial" size="3">
<span style="font-family: Verdana;"> <font
style="font-size: 7pt;" size="3"> <b>Use an

I have highlighted optin box where you put code of getresponse; but it go to left and not center,can someone help me with the html code, so it will go to the center the form?

Thanks in advance!

Cheetah