Samsung DynaFlat TX-P3064W 30" TV "av channel smart" Questions

...used; and connect it to the AV IN on the back of the TV. THEN press ch down on the TV remote until you get to "AV1" - it is below channel 2; double check DVD player to make DVD is playing and

...channel (AV-1) but I can't make it work. What I'd like is when I turn it on, I don't have to change the input each time - it's annoying. Also - why the heck doesn't the "smart" mode work detecting ...