Cannot send or receive e-m or messages. This is

this sound like you have been highjacked> i would first contact your ISP and put a hold on your email account. Then I would backup your computer. Then you will need to either cleanup your computer or have someone do it for you. before you setup your email account again let your computer run for a few days make sure you Antivirus software is up to date and that all of your microsoft updates are up to date. Once you have insured all this is correct you can then re-setup your email.