2004 Dadge Ram Headers & Exhaust

Hi everyone I recently bought an 04 Dodge Ram 1500 Hemi and im thinking of adding an exhaust. Most importantly I need to know if when I add headers im going to have a prob with my computer. One of the shops around my house said that it requires a computer genius to get my truck work fine an not show check engine lights and all that good stuff. Im wondering how true this is because i really want true duals and full blown exhaust upgrade from headers back.

if from headers back u mean removing the cats, then yes, you'll get a check engine light, but it wont affect the truck, and theres lots of ways to get rid of that light, u can tuck the o2 sensors behind the transmissions heat shield, and that should do it.
what headers and exhaust are u goin with?