I think that's a tricky part of the game.
Where flotsam says
I also never have warmed to the supposedly realistic “lets open the draw by clicking, holding, and pulling the mouse backwards” approach to game interactions
-- he's talking about things like the trap door where you have to "grab" it with the mouse and pull it certain directions.
If you check this video at around 14min 15sec into it, you can see how you're expected to wrestle with the trap door.http://www.youtube.com/watch?v=-Rp3rgSg40g