What is Microsoft .NET PASSPORT?

A .NET PASSPORT gives you a single secure way to sign in to multiple internet sites and services using one signed in name and password.

You must have a passport to MSN Messenger .if you have a hotmail and MSN account .you already have a passport if you have a windows-xp you probably have a passport if not you can get it using .NET passport wizard .the process to get a passport in windows-xp follow the following steps:-

STARTàCONTROL PANELàUSER ACCOUNTàADVANCE.