Hi Robert Gray,
It is really strange that you did not have that in the Properties window. I am glad it is ok now.
You are right about the ASP.NET Ajax-Enabled Web Site
template - it is available only in Visual Studio 2005 (after you install the Ajax Extensions). By default VS2008 creates all new sites as Ajax-enabled which means the web.config file is configured automatically but does not add ScriptManager by default.
Please check this blog post
on the matter.
the Telerik team