To add the featured posts to the home page, we will use the Featured Posts plugin available at http://wpmudev.org/project/Featured-Posts.
featured-posts.phpand look for the line that says
$featured_blogs = array(1,2);. Replace the values in the bracket with the ID of the blogs you would like to feature—for example blogs owned by your fellow administrators. If you don't know the blog IDs, you can find them by looking at Site Admin | Blogs: