This is the sample code used in the 3 demos I did today (3/25/08) for the Magenic Webinar on Visual Studio 2008. Grab it here.
The archive contains a solution with 2 aspx pages and the related VB codebehind files.
You should be able to look at the query and get a good idea of the schema of the Person table. (ID, LName, FName, City, State)
There are two "regions" in the default.aspx page. One is just regular HTML, and the other has an AJAX UpdatePanel and a ScriptManager control. Anything you want to "AJAXify" needs to go inside the update panel (near the bottom half of the page.)
The Default.aspx page is used for the first two demos, and the LINQToObjects.aspx page is used for the 3rd demo.
If you have any questions, please post a comment.