ASP.NET Calls?

This is my first ASP project. Until now I haven't dealt with anything except raw HTML and PHP.

I'm wanting to prevent having many, many pages for redundant stuff like a Contact page.
I would like to set this Contact page up so that selecting a certian persons name would use the
same form as all other contacts would.

I hope this makes sence, here is an example:

-contact.aspx
-Name1
-Name2
-Name3

Selecting any of the Names would result in something similar to:

http://www.mysite.com/contact.aspx?Name1


Can anyone shed a little light on what I need to research for this? I have searched high and low
but I believe my problem is that I don't know what this is actually called.

Thanks for your time!

Brad Arnold