Homepage Featured Content Options – Catch Kathmandu

Hi, I am trying to replace the default 4 images and associated text on the homepage of Catch Kathmandu. Two questions: 1. How do (or where do I) replace the title of the section 'Popular Places' ? 2. How do I change the images for the Featured Content #1 etc sections on the Homepage Featured Content Options ? Whenever I click 'Add Image' absolutley nothing happens (i.e. I cannot specify an image to replace the default ones). Additionally, when I go to the library and select an image URL and paste that in, it does not work... Please advise. Thanks in advance, Steve