Application service provider, namely, designing, developing, managing and maintaining computer software and associated data files enabling users to integrate contact information from a variety of different networks and systems, to have calls forwarded to a variety of different networks and systems, to connect to a variety of different instant messaging networks and systems, to conduct video conferencing, to place phone calls and video phone calls anywhere in the world, and to convert and deliver facsimiles, emails, and voice mail messages to a variety of different networks and systems