Thanks for your reply.
I went to the site you were talking about but I am a little lost.
I have a few questions
Where exactly do you mean that I should create a handler for the Sending event? In the SignUp.aspx.cs, web.config file or SignUp.aspx code behind?
I am presuming that you mean to set this up in the SignUp.aspx.cs file which I have done as per the code I sent.
If this is to be done through this file then why does my code work in the Chapter Nine example and not in this example as it has been copied and pasted?