Firstly, your question is misleading, this isn't really a question about ASP.NET 2.0, it is a question about how to integrate Facebook into your website.
Facebook has an API (which I found by googling the phrase "Facebook Integration") here:
http://developers.facebook.com/[
^]
If you have any problems with the API, they have forum which will be help than the Code Project as
all of the users there use the facebook API. If you have specific ASP.NET questions, obviously here is better.
Hope this helps.