Windows 7: TV tuner cards

Hi All,

I got a HP IQ820uk Touchscreen PC which I bought to use as a Media Center in my front room.

When I bought the PC it came with an AVerMedia A323 Hybrid DVB-T, which has an analogue tuner. We have just undergone Digital switchover, so it left me with only 1 working tuner. I decided to purchase a USB stick tuner (Pinnacle PCTV DVB-T Stick Ultimate 72e), which is installed and working fine.

My question is, I want Windows Media Center to pick up and use the built in tuner first and foremost. That tuner has the ability to do digital text. The USB tuner, ideally, should only be used for recording.

Can anyone help me solve this problem?

Thanks in advance

Michael