[GandalfDDUK]

Sorted it in this part;

<!-- / flags start -->
<div>
<if condition="$post[fieldXX]"><img src="images/flags/$post[fieldXX].png"></if>
</div>
<!-- / flags end -->

REPLACE with;

<!-- / flags start -->
<div>
<if condition="$post['fieldXX']"><img src="http://www.yourdomain.com/forumdirectory/images/flags/$post[fieldXX].png"></if>
</div>
<!-- / flags end -->

and the flags should show.