Just get a component video switcher from walmart for $20.00 I did this and many others at avsforum as well and it works great!
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***dvdguru***
My system:
Outlaw 990/Outlaw 7125
Panasonic TH50PHD7UY HD Plasma
Toshiba HD-XA2 HdDvd Player
Panasonic BD-10 BluRay Player
Paradigm Studio 60 v.3
Paradigm CC690 Center v.4
Paradigm ADP470 Side & rear surrounds
SVS PB12 Plus/2 Sub