RSSI Reading Signal Strength With Arduino and XBee

The thing is that I want to determine the position of an object. To determine the position I need to know the signal strength.

I have a project in school which is to find in which room an object is in. So I thought I could find an object using RSSI with triangulation.

If somebody here have any advice on how I can find an missing object in a room please help me.

Please watch my post here: http://arduino.cc/forum/index.php/topic,101935.0.html