You can do it yourself just fine, beleive me.
Just paste the complete code of the register-template on a notepad so you have the original code when things go wrong (kind of back up).
Now here is my piece of code, it is somewhere halfway the template, maybe it looks the same for you
Code:
<td>
$vbphrase[confirm_password]:<br />
<input type="password" class="bginput" name="passwordconfirm" size="25" maxlength="50" value="$passwordconfirm" />
</td>
</tr>
</table>
</fieldset>
<div align="center">
<center>
<table border="2" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#FF0000" width="56%">
<tr>
<td width="100%">
<p style="margin-left: 10; margin-right: 20; margin-top: 0; margin-bottom: 0">
<font face="Arial Unicode MS">Het is NIET mogelijk aan te melden met een E-mail adres van een gratis dienst (zoals Gmail, Hotmail, Live etc)Heeft u enkel een gratis Emailaccount en wilt u toch inschrijven? Neem dan contact met ons op via het
<b><a target="_blank" href="http://www.myfantasticsite.nl/modules.php?name=contact">
<font color="#FF6600">contactformulier</font></a></b></font></td>
</tr>
</table>
</center>
<fieldset class="fieldset">
<legend>$vbphrase[email_address]</legend>
<table cellpadding="0" cellspacing="$stylevar[formspacer]" border="0" width="400">
<tr>
<td colspan="2">$vbphrase[enter_valid_email_address]</td>
The purple part is what I added for my board.