625 and vista media center

[morpheos]

I am getting HD OTA on a Hauppauge card and just want to get analog reception of dish in vista media center. I can get the dish signal ok I just can't get media center to recognize my 625 remote or change channels on the 625 with ir. Anyone currently doing this. I am using an xbox 360 as an extender and just want to use media center for my ota and analog dish channels.