Phishing?
Aiglon
I'm in paranoid mode here...
Did you recieve this email on your Hotmail account?
If so are you certain it actually came from Hotmail?
If no to either or both of the above, get into your Hotmail account NOW and change the password, you may have been a victim of "Phishing" where fake emails and websites are used to get people's account details, typically for online banking, email accounts, ebay etc. which they can then use for fraud.
Regards, hoping I'm wrong.
Memetic