Ask the Autozone guy to reset the MIL. You still have a stored code(s) causing the MIL lamp to be on.
Your 94 - 96 T-bird 4.6 is OBD II compliant
http://www.actron.com/media/categori...128_CP9131.pdf
The check engine light cannot be extiguished by disconnecting the battery. An actual hexidecimal code must be recieved by the ECM in order to extinguish the light. You will need a scan tool or someone with one. Cheap OBD II code readers can read codes and extinguish the MIL. They can be purchased for as little as $40. For $200(not including a $50 used Palm PDA) or so on ebay you can get a full blown handheld scanner from Auterra that will even do the new CAN protocol. These new scanners from Auterra and others will record and graph sensors and really help you troubleshoot OBD II compliant vehicles (ALL 1996 and later) Worth every penny if you own a small fleet(I am blessed with multiple teenagers) of out of warranty cars as I do.