Website design?

[alphabravotango]

In what program is written (or how is built) a site like Yahoo! or Hotmail? I mean, I am interested on the part of it that deals with opening an email account...selecting and username and password, and creating the personal data. How is this done (software name, technology)?

[samwilson3d]

in addition to html u will need to at least know javascript and php
I design websites and i use frontpage and GoLive for the html end.