PnC help needed

Hi all, I’m in need of some help to make a point and click game, I need to know:

1.How to move the character with a mouse. I currently am using keyboard keys, it only needs to move along the X axis, the other thing was is it better to use images of a walk cycle? I currently use seperate limbs on different layers for the animation.

2.How to create boundries and move scenes. I wanted to have arrows to be able to be pressed to switch scenes.

3.The layers in the timeline, currently I have 3 layers 1 for background, 1 for AS3 and 1 for content.

Heres a pic to help:

Any help would be greatly appriciated.