bulk email sender with IP Rotation

write a small windows application which sends 3 emails. this application should be a downloadable application which when installed in a windows 2003 server or windows 2008 server will send email using the server ip as the sender ip. first email should go from first ip of the server, second email should go from second ip of server and third from third ip. software should send 3 emails directly without any external smtp settings needed. this feature is to be integrated with our existing bulk email software . so you only have to write the code . no complex graphics design is required. we will provide you the remote access to windows 2003 server to test the application free of cost. regards