What version of CCM do you have?
Because if you have at least CCM 4.1, and the you should have the Module 1 and 2 option on the Expansion Module Information on the Device Information/Configuration page. Then just select the 7914 mod and you are done.
The Cisco Unified IP Phone Expansion Module 7914, Cisco Unified IP Phone Expansion Module 7915 and Cisco Unified IP Phone Expansion Module 7916 are supported on the Cisco Unified IP Phone 7962G. Up to two expansion modules may be attached. It is not supported on the Cisco Unified IP Phone 7942G.
Caos is the natural order of things...