Auto email using windows live mail on birthday

Hello Friends,
In my contact directory I have birthday of my friends in column 'r' and their emails in column 'x'. I want to send happy birthday wishing email to each of them on their birthday regularly without fail. I don't want to do it manually because it's very difficult to find the birthday of each one daily regularly without fail. So I want to send a wishing email automatically using windows live mail regularly. I'm using windows 7.
Is it possible? If so please send me a macro code to perform this task. See the sample attached file.
Thanking you in anticipation.

Mukesh