With Windows Live Messenger, staying in touch with your friends and family is easy, no matter where you are in the world. You can chat, talk, have a videocall and send files across the internet. You also have built in games that you can play with your friends, do your shopping and much much more.
You can connect to Windows Live Messenger using your Live ID, that is, the same that you use when you log in to your hotmail-account. Then find your friends, and you're off!