IP Messenger

I need a tool to send Messages using the Messenger service of Windows 2000 over the internet. I know to send them over the Lan, but what I require is the capabilty to send them over the internet. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform Windows 2000,Xp ## Deadline information Will pay only after I can successfully build the application on my system.