Character movement (need help)

I want to make a simple box dude in the blender game engine walk about a small enviroment but i have no idea how to make him look like he’s walking please can someone help.

Ok, what you want is to create a ‘walk-cycle’ that is played when you press the movement Key.
Record the action, and play it using the action actuator, on the armature.

im new to blender i know how to animate but whats the action actuator?

When you animate, you must animate the action using the action editor. Then, using the logic brick system, you’ll add the actuator and other stuff.
Look up tutorials.

Manual > Game Engine > Logic > Actuators

And for more information on the BGE: Manual > Game Engine

This 3 parter may be exactly what your looking for!