How to send attachment with MS Outlook automation?

I have found the following article to be a very excellent run through on how to use Outlook automation with C++ in Visual Studio 2010. However, I cannot find any descrption of how to add an attachment(s) to an email.

How to automate Outlook 2010 by using C++ in Visual Studio 2010 together with MFC
http://support.microsoft.com/kb/2575036

Any help greatly appreciated. Thanks.