You're off topic for this forum, which is dedicated to Windows Live OneCare.
Support for Windows Live Hotmail and other Windows Live programs and services: http://support.live.com
Help topics at http://help.live.com
Support for MSN or paid Hotmail Plus - http://support.msn.com
If you have been upgraded to the latest version of Hotmail there is no change for you. If you have the prior version, you have a link on the lower left to switch to "Classic" or "full" and this link can also be found under options from the upper right of the page. The new version has no switch.
-steve