There was no mentioning of any errors on chapter 3 of the errata sheet. However, I did lookup the namespace collections just to see if they exist, I found all except two: System.Web.UI.WebControls.WebParts and System.Web.Management. Even that does not mean they don't exist, but they were not in my list via the ASP.NET Web Matrix. This only makes me think that is a "syntax-type" error, which can turn out to be the most difficult to find. But on a positive note: after reading the book's excerpt, I wsas intrigued by the approach and I am considering looking into it, if I can tear myself away from ADO.NET and use the ASP.NET Web Matrix. So thanks for the incentive, stzd8.