How to Extend the visual studio 2005 with new Project type - Need help

Question

I would like to add new Project type to the visual studio 2005 IDE so when the user click on File/New/Project the "New Project" dialbox popup to show my project type on the left and some of my new project templates on the right. I am looking for some help as how to implemented this (with code samples are helpful) as i have learned that visual studio sdk 2005 has some extensibilty features like vspackages and the likes.
Much appreciated and Happy Holiday.
sdknewbie