How to Read incoming Whispers?

Ok i would like to know the code to read and Reply to incoming Whispers.

The Addon i would like to make is Were r u,

What it does is is somone whisper you "Where are you" Then it Send the cord and zone and map.

I need this beacuse ppl always as were i am and it be a pain of me.

TY|||tell them to shift-click your name.|||Thank that so did not help me that was realu kinda rude.

Can any one help with this.|||if they really want to know... they'll shift+click your name. or press O and see your location. easy.|||ok W.e

..................................|||Register with "CHAT_MSG_WHISPER", compare argument one (the message) with some hard coded value, if they're asking where you are then use argument two (whisperer's name) and call SendChatMessage with the response.