How To Add More Fields In User Registration Form

The default built-in user registration form that we have in the Asp.Net Membership is that there are only fields for:

UserNamePasswordConfirm PasswordEmailSecret QuestionSecret Answer

And we have seen all these in a user registration form. But what if I want to add more fields to it. For example, take a look at this website, this registration page has a lot more fields for users to enter information: [URL] This regirtaion page has the information for Street Address, Suburb, Gender, DOB and lot more. How do I add these fields into my registration page. I have heard of something called profile. But how do I intergrate profile into this, if this is what we use to add more fields to user registraiton page. share a sample working code of user registrtion page with more fields.