how to do whatapp on PC without anysoftware

Some times you might be Busy surfing the internet and you need some tutuorial from a Friend or you need to chat on whapp, Navigating from your PC screen and phone might be Boring so you can chat using you ur PC.
1.Make sure your PC and phone are connected to the internet,

2. Then use you bar-code on ur phone to connect to your PC
3. start Chatting should in case you are not clear? watch below the short tutorial
http://www.youtube.com/watch?v=lSGrUHyzHvQ