Trying to better understand the Web POST process.

Hey guys, I am newer to the Web format for .NET programming (I am use to the Windows Application programming), and had a quick question about how the POST action works in the .NET / ASP.net Web application(s). [Trying to understand how the POST works on both sides the sending and the receiving application] Does anyone have a simple way to explain this, that would make sense to someone new to Web Programming in VB .NET? The scenario I am trying to accomplish would be the following: I am wanting to send a username and password to the web application... Question 1: Do I need to set a specific variable in the application side to accept the username and password variables being sent over the POST command(s)? If so, are they statically set, and need to be reference by name/variable when sending the information to the application from the outside (another application or Internet Explorer)? Question 2: What do you have to do to ...