I want latest original antivirus for computer, which can use in four or five computers. I want to purchase this. What is the cost of the latest antivirus. please give me with full detail.

You can install Avira FREE or AVG antivirus, both are very very good antivirus as well as free for personal use. And they have unlimited updates.

HEy why dont you use and try Avast ... its an good antivirus...