If you use Internet Explorer, Chrome, Firefox, Safari or Opera you can use the browser’s built-in developer tools to point at and “inspect” elements on a web page to find out what styles they use. You can even tweak the styles live to experiment with any changes you might fancy.
#FeaturedContent { display: none }
#PageTop { display: none }
Add that CSS to the foot of the skin’s stylesheet, or to your custom stylesheet.