can you register used consoles?

well i bought a few consoles that weren`t brand new ( ps2, xbox) and i still have my gamecube which i didn`t register. i was wondering if i could still register them incase they broke i could use the warranty o.o xD lol

At this point in time the things probably aren't even under warranty anymore, if that's what you mean.

you could double check with a video game store but I don't think the odds are extremely high.