Displaying Recent Posts from EACH Category in Home Page

I’m trying to have my home page display the 3 recent posts from EACH category that I’ve created like this page at http://www.newlaunchguru.com

Currently the theme I purchased from Studio Press displays x number of recent posts from ALL categories. (as seen on http://www.thenewlaunchguru.com)

Is there a plugin that will allow me to do what I need? I’ve contacted the author of the theme and was told that they knew no such plugin and it’ll have to modify or customized manually.