I would advise purchasing Windows Live Onlnie care it hasnt got the greatest of reviews on blocking threats, there was a write up in the national press a month ago. There are many other good ones ehich can be bought or you can get good cover frm free programs.
Hotmail is a great service been using it for years. You get full web based email and can be accessed anytime any where. The free version has 10mb of storage space and you can filter out any spam mail which you recieve. Also once you have a hotmail account you can use MSN which is a program which runs in windows where you can add other people, and chat in real time to them. MSN supports webcam, voice calling and skpe. Hope that helps.