Well, it won't be easy, you'd have to check the
on "keypress" ...
event and send the actor to appripritae directions, like:
if(Keyboard.KeyCode==VK_RIGHT) actor.GoTo(actor.X + 50, actor.Y);
...
But since there's no event for key-release, you'd have to periodically check for the "keypress" events to know it the key is being hold down.