Well, for most TVs, configuration is pretty easy. You turn them on, press the menu key, then say channel auto-detect.
For digital cable and satellite solutions, usually they have an external tuner that configures itself. If you're using a coax input, the signal is usually on channel 3 or 4. If it's composite, your TV will probably put the signal on an input channel or a "video in" channel...
Yes, sorry, this joke needs to be beaten into the ground. Something's got to be done to improve post quality around here.