Very good link for Ajax and ASP.NET Developers.

Tabs with ajax and ASP.NET @ http://ajax.asp.net/ajaxtoolkit/Tabs/Tabs.aspx

Watch videos to see what you can do with ASP.NET AJAX in your own applications. Ajax with ASP.Net video tutorials

Watch it @ http://ajax.asp.net/

How to upload a file to a Web server in ASP.NET by using Visual Basic .NET

more @ http://support.microsoft.com/default.aspx?scid=kb;en-us;323245

ASP email related tutorials @ http://www.aspexpress.com/tutorials/tutorial.asp?id=4

CDOSYS is a built-in component in ASP. This component is used to send e-mails with ASP.

More @ http://www.w3schools.com/asp/asp_send_email.asp