How to configure Alert mails in CVS

[Maheswara Reddy -X \(mahreddy - NESS Technologies India L at Cisco\)]

    Hi Don,
                  I'm Mahesh need your favor in CVS.
                  Would like to know how do I configure email alerts to my
modules in CVS so that if some one checks in or checks out  need to send a
mail.
                   Would appreciate  your help in this regard.
Thanks,
Mahesh