Thanks for your reply.

I guess this won;t help as what I would like to do is upon Submit, the Forms window closes completely. Redirection still means that a web page will get opened. Unless there is a redirection which itself is "close window upon load". The users do not want to see any further windows or web pages once Submit is pressed.

What happens when you choose to redirect but leave form space blank if possible?

Another possible solution is closing the thank you page using Javascript. Not ideal but you could edit the the html and put in something like;

<script type="text/javascript">
function shooWindow() 
{
     window.close();
}
</script>