Deriving Newton's law of cooling

[Doctor_Doom]

Hey guys was hoping someone could give me a hint for the derivation of Newton's Law of cooling stated in the following equation form:http://img263.imageshack.us/img263/3143/a6e5a27835e9e5738016606.png

http://img716.imageshack.us/img716/8728/75784887.jpg
Thanks in advance!

 

[Doctor_Doom]

Bump!

 

[Doctor_Doom]

Found plenty of derivations in the form of temperature or temperature change but nothing in the form of heat (energy) rate transfers.

PLEASE DROP ME A HINT!