I think that all of us in this part of the industry had to start somewhere, and I would say if you could take some vendor training (which is usually free, or low cost), it might add some value to your resume. I got started doing "hook up's" after work, while I was in college working at Circuit City (I know guys, go ahead, laugh, I do too looking back) and it turned out I was making just as much on the side as I was as a sales person, and from that point, that's all she wrote. So if you have a chance to get a part time job in the electronics world, take some vendor training, get any type of certification (CEDIA certification especially) that relates to the A/V world (or Telcom/Data world for that matter) you can show some value and prove that this is the direction you want to take your career in. I would pay close attention to what Theaterworks had to say, because you will find his comments to be the norm, not the exception.

Good luck

Trey