this is just 2 days old...
<a href="http://www.pprune.org/ubb/NonCGI/ultimatebb.php?ubb=get_topic&f=35&t=001714" target="_blank"> look in PPRunE </a>
alternatively, <a href="http://www.pcbarrett.btinternet.co.uk/" target="_blank"> look here </a>
If you are a bit interested in Exel, do one yourself, it is not that hard... <img src="rolleyes.gif" border="0">