Where do I remove the option for the Style chooser?!?
If you mean in the footer, just comment-out that section from the /default/footer.tpl template... that's what I did:
<td width="60%">
{if $privacy_statement}
{$privacy_statement} ·
{/if}
<a href="{ubb url="ubb=markallread"}">{$lang.MARKALL}</a>
</td>
That removes both the style and language choosers...