A suggestion:
On the HTC website there should be a banner saying "Saw us on Discovery Wings? Click here"
When the potential customer clicks the link he/she is directed to a quick welcome message and some hints on how to get started.
A "what you are going to need" section should start..with a link to the relevant online subject. For example (the link won't actually work here):
You are going to need to know a number of important key commands. A list of these can be found
here. You should print this and have them handy at all times while learning the game. Most joysticks can be programmed to incorporate all of the game commands.
A few other examples, such as how to use the radio and a quick overview of the settings page on the clipboard, would go a long way to keeping these customers and would avoid questions like "Okay, how do I play this game" on channel one.
It would also help you get a better idea of how many people actually were attracted by the advertising dollars you have spent.