[mythtv] external channel change program

[Rick Warner]

Hello all,
	I am going to be plugging in all of my connections this weekend when the xmas 
tree comes down.. I have mythtv installed and configured to use my 
composite(rca) input..  my only problem now is setting up the external 
channel change script.

	Basically, I need to know what parameters are passed to the script when 
changing channels, etc.  Is it just the # that should be changed to, or are 
there channel up/down parameters too?  I apologize if this information has 
already been documented, but I could not find it.