Please help! Cannot get AutoCompleteExtender dropdown to work...

Good Evening,

 I have tried all day today to get a simple AutoCompleteExtender dropdown to work, as per the example at...

http://www.asp.net/AJAX/AjaxControlToolkit/Samples/AutoComplete/AutoComplete.aspx

The video tutorial makes it look so simple, and I cannot believe it has turned out to be so difficult!

Could someone please check to see if I'm doing something obviously wrong?

Here is my test.aspx page (no code-behind)....

 <%@ Page Language="VB" AutoEventWireup="true" CodeFile="test.aspx.vb" Inherits="people_test" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Tran ...