how to deactive a hotmail account ??

Just follow these steps:
1. Open following link:

Delete MSN, Hotmail or other Windows Live Account

http://login.live.com/login.srf?wa=w...4855&mkt=en-US

2. Enter your mail ID and password and it'll show following page:

This image has been resized.Click to view original image

3. Click on "Close account" button.
4. Your account will be reserved for 270 days so that if you want to re-activate it, you can do within 270 days. After 270 days it'll be deleted permanently and you'll not be able to re-activate it.