gotoAndPlay issues

i have 3 scenes with a movie clip on each one that acts as a button.
i want each button to go to the next scene, so in the (first)button i write:
_root.gotoAndPlay(“Scene 2”,1);

it does nothing.
what is the problem?

also, it seems that _root is the name for the first scene only. how would i call a specific scene, something like this:
_thisScene.gotoAndPlay(3); [something of this nature]
is there such thing?