Front Page not picking up "page-front.css" file

Hi there

Great module which I am just learning to use.

I want to create a custwom Front Page for ananomous users with a completly different theme.

I have created to new files - page-front.tpl.php and page-front.css - and placed them in the route of my theme. Now whilst the custom front page displays correctly (using the page-front.tpl file) it does not appear to use the page-front.css file.

I can prove this as when I delete this file - nothing happens !! However,, when I delete style.css then all styling is lost.

What am I doing wrong? Help :-)

THanks