Need Help using my existing stylesheet with FCK

Hi there, i am trying to use my own stylesheet inside the editor, and by changing the config file options as below, I got it to look perfect inside the editor

FCKConfig.EditorAreaCSS = FCKConfig.BasePath + 'style.css' ;
FCKConfig.BaseHref = 'http://www.mysite.com/' ;

BUT, in the styles selector box inside FCK, i cannot see the styles in my stylesheet, i only see the default FCK ones.

Is there any way to make the styles in my stylesheet available to use in FCK?

Many thanks in advance.