I was wondering what the difference would be to use this method, as opposed to a T-SQL method, ie not VB/dll one.

Like this one:

http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B312839#3

As well, a more general and novice question, why would I use this method over something like plain old CDO where I don't have to put in my mail server name (Particularly when I do have a Virtual mail server or whatever else is necessary to send it)?

Thanks