I have just built a htpc and I have a panny plasma 42" comm edtv which has no tv tuners or speakers. I am using hauppage 500 mce dual tuner and win mce usb irt to control 2 sat boxes. I cannot get win remote to change channels. I followed instructions for mce My TV setup and win mce saw 2 boxes. I configured the sat box manually with sat box remote and went through 1-2-3-4-5-6-7-8-9-0-channel up and channel down. At end win mce said it "learned" sat top box settings. I tried to change channel with win mce remote, the 3 digit num appeared in small tv box but did not change channel. I have tried this at least ten times with same result. Any suggestions would be appreciated.