computer
If there's a problem connecting to the PCM (cars computer) ... I would first check to see if the cigarette lighter has power (plug a cell phone adapter into it or any Cig adapter and make sure it has power) ...
if it won't work... then you most likely have a blown fuse (Accy/Cig I think?) ....
if this is the case (blown fuse).... I wouldn't let the shop that did the cam and "tried to communicate w/your computer" anywhere within a 100 yard radious of your car.....
regarding wanting a tune of some sort and teaching you how.... my suggestion would be to check the sponsor list to the right (check the latest sticky about local tuners) and find a reputable shop that can tune your car....

