ASP.Net AJAX page for displaying Monitoring Data

I need a single web page, coded in ASP.Net / VB 2010 that looks up data from a SQL Server database, displays a dynamic list of metrics and their current values.? Then, using AJAX, I need the metric values to refresh every 15 seconds with the latest value (by querying SQL Server for the most recent record). Final deployment of this solution will be Intranet based. I have the database schema well defined as well as the SQL to get at the correct data.? What I don't have is the knowledge of how to put together the ASP.Net / AJAX? code to accomplish this.