Hotmail Account Locked

I cant access my hotmail account. My daughter has told me that she got emails from me along with links to other products. Other people whose email address were on my hotmail account also received these messages which I didnt send.

When I try to log into my account I am getting a message that some one else has control of it

What should I do?
[broken link removed]

Try:

http://windows.microsoft.com/en-us/windows-live/microsoft-account-help#microsoft-account=tab1

bottom right there is a link --> Think someone's hacked your account?

Also, have a look through:
http://windows.microsoft.com/en-GB/windows/outlook/hacked-account