Axiom Home Page Forums General Discussion Stereo 2 Receivers-1 set of speakers

Reading all the posts about running stereo with a separate 2 channel receiver has tweaked my interest. If I have 2 separate receivers, 1-2 channel for stereo and 1-multichannel for HT, what's the best way to hook them up to the same set of speakers? Is that where the biwiring comes in? Is there a switchbox that I can buy? Or is there a better easier answer that I'm missing? Or would it be better to just buy another better receiver. I have a Yamaha 7640?? I think. Can't remember the model # since I'm at work.

Thanks.