[HTML][MySQL][PHP]Nowe pole w formularzu. Jak to zrobić ? Opcje

[majorlpa]

Witam serdecznie !
Mam pewien problem a mianowicie nie wiem jak zrobić aby dodatkowe pole w formularzu(w kolorze zielonym) po zakończonej rejestracji zapisywało się w bazie danych. Proszę o pomoc, jakieś wskazówki, rady, porady. Może mam coś zmienić zrobić to w inny sposób ? Dziękuje z góry Fragment kodu:

CODE

<form action="index.php?a=join" method="post" name="join_form">
<fieldset style="float: left;">
<legend>{$lng->join_user}</legend>
<div class="{$error_style_username}"><label>{$lng->g_username}<br />
<input type="text" name="u" size="20" value="{$username}" />
{$error_username}
</label></div>
<div class="{$error_style_password}">
<label style="float: left; margin-right: 2em;">{$lng->g_password}<br />
<input type="password" name="password" size="20" />
</label><br />
<label>{$lng->join_confirm_password}<br/ >
<input type="password" name="confirm_password" size="20" />
{$error_password}
</label></div>
</fieldset>


<fieldset>
<legend>{$lng->join_website}</legend>
<div class="{$error_style_url}"><label>{$lng->g_url}<br />
<input type="text" name="url" size="50" value="{$url}" />
{$error_url}
</label></div><br />
<div class="{$error_style_title}"><label>{$lng->g_title}<br />
<input type="text" name="title" size="50" value="{$title}" />
{$error_title}
</label></div><br />

<label>{$lng->g_description}<br />
<textarea cols="40" rows="5" name="description">{$description}</textarea><br /><br />
</label>

<label>{$lng->population}<br />
<textarea cols="23" name="population">{$population}"</textarea> </label><br />
<br>


<label>{$lng->servertype}<br />
<input type="checkbox" name="servertype" value="{$pvp}"/>PVP
<input type="checkbox" name="servertype" value="{$pve}"/>PVE </label><br />
<br>

<label>{$lng->g_category}<br />
{$categories_menu}<br /><br />
</label>

<label>{$lng->servrates}<br />
<input type="checkbox" name="servrates" value="blizzlike"/>Blizzlike
<input type="checkbox" name="servrates" value="medium"/>Medium
<input type="checkbox" name="servrates" value="highrate"/>High Rate
<input type="checkbox" name="servrates" value="funserver"/>Funserver</label><br />
<br>

<div class="{$error_style_banner_url}"><label>{$lng->g_banner_url} {$join_banner_size}<br />
<input type="text" name="banner_url" size="50" value="{$banner_url}" />
{$error_banner_url}
</label></div><br />
<div class="{$error_style_email}"><label>{$lng->g_email}<br />
<input type="text" name="email" size="50" value="{$email}" />
{$error_email}
</label></div>
</fieldset>


<fieldset>
<legend>{$lng->join_security}</legend>
{$join_captcha}
{$join_question}
<input name="submit" type="submit" value="{$lng->join_header}" />
</fieldset>
</form>