If you want to have an icon link to your photos instead of the "insert" text link, you can do the following:
The original coding for the editor_smilebox template is as follows:
Code:
<fieldset id="photobox" title="$vbphrase[photo_popup_my_photos]">
<legend>$vbphrase[photo_popup_my_photos]</legend>
<table cellpadding="4" cellspacing="0" border="0" align="center">
<tr>
<td class="smallfont" colspan="$vboptions[smcolumns]">
[<a href="#" onclick="window.open('$vboptions[bburl]/photo_popup.php?e=$editorid','fotos','scrollbars=yes,resizable=yes,width={$vbulletin->options['photo_popup_width']},height={$vbulletin->options['photo_popup_heigth']}'); return false" title="$vbphrase[photo_popup_insertlink]">$vbphrase[photo_popup_insert]</a>]</td>
</td>
</td>
</tr>
</table>
</fieldset>
Instead, try this:
Code:
<fieldset id="photobox" title="$vbphrase[photo_popup_my_photos]">
<legend>$vbphrase[photo_popup_my_photos]</legend>
<table cellpadding="4" cellspacing="0" border="0" align="center">
<tr>
<td class="smallfont" colspan="$vboptions[smcolumns]">
<a href="#" onclick="window.open('$vboptions[bburl]/photo_popup.php?e=$editorid','fotos','scrollbars=yes,resizable=yes,width={$vbulletin->options['photo_popup_width']},height={$vbulletin->options['photo_popup_heigth']}'); return false" title="$vbphrase[photo_popup_insertlink]"><img src="$stylevar[imgdir_editor]/CameraIcon.png" border="0" /></a></td>
</td>
</td>
</tr>
</table>
</fieldset>
Just change the title of the image and the image directory, and you should be all set.