How To Hookup PS3 To A Different TV?

My living room tv supports 3D, my bedroom does not. I bought spare hdmi & power cables for the ps3 in hopes that I could simply unplug it and bring it in the bedroom to watch netflix on occassion. But, I try to boot up & it says that it's an unsupported format (duh). So the only thing I can see is that I would have to physically change the resolution before disconnecting, then reconnect in bedroom & also change it from wired lan to wireless. There's gotta be an easier solution than this right? Maybe even not using the hdmi, would that force the ps3 to change at startup, use the Pbr instead.