I have used your code from the following link
http://blogs.msdn.com/b/stephen_griffin/archive/2005/10/25/new-outlook-documentation-part-1-contact-linking.aspx
And it worked like a charm :-)
http://blogs.msdn.com/b/stephen_griffin/archive/2005/10/25/new-outlook-documentation-part-1-contact-linking.aspx
And it worked like a charm :-)