Dual Sound cards in WindowsXP

I have Two sound cards installed on WindowsXP with no conflicts. Right now…I can ONLY use one sound card at a time. If I want to switch to the other sound card..I goto the control panel and change the option in sound and multimedia options. card 1is the dolby digital 5.1 SOUND BLASTERLIVE! and Card 2 is the onboard AC’97 Audio controller.

My Question is…How Can I record the output on sound card 1 AND the Mic on sound Cards 1 and 2 at the same time? Sound Card 1 would be playing Karaoke music from an .mid file.
Basically, I want to record a duet…If I can’t RECORD then I just want to hear the music and both microphones comming from the speakers.

Any Input would be helpful !!

Thanks,
Dan