I just found out about this website. So, this information may be too late to use.

On the other hand, your original post was on Jan 15, 2009.

Microchip has an application note, AN657, that shows you how to decode TV remote control signals. The application note includes source code.

You make a table of the decoded codes for the buttons you want to use.

Then write simple subroutines for each task you need to do.