If your Hotmail account has been compromised or you simply want to help ensure its security, you will need to know how to change your Hotmail password. Sign in to your account using your Hotmail email address and current password.
Click on Options in the top right side of your Hotmail window and then select More Options. The Mail Options page will open. Select View and Edit Your Personal Information under Manage Your Account.
On the Windows Live Account page under Password Reset Information, click Change. Enter your current Hotmail password into the Old Password field. In the next section, you will see how to change your Hotmail password: simply enter a new password into the Type New Password field. Check the password strength and choose another Hotmail password if the one you selected is not strong enough. For some tips on selecting a strong password, read the Bright Hub article Creating Unbreakable Passwords.
To help you remember to change your Hotmail password regularly and keep it secure, select the Make My Password Expire Every 72 Days check box. Hotmail will not only remind you but also require that you change your password again after 72 days.
When you have selected a strong password that you can remember, click Save and you are all set.
For more help with Hotmail, read Windows Live Hotmail – All You Need to Know and Power Gadgets for the Vista Sidebar - Windows Live Hotmail Gadget.