Physics engine question

[adimov]

I am using the physics engine and when I run the following code:

cane2=viz.add('cane2.WRL')
cane2.scale(.007, .007, .007)
gravity = viz.addplane(0,1,0,0)
body = viz.addbody()
body.addbox(0.05,1.5,0.05,1)
cane2.link(body)

the object cane2 shoots up in the air before falling down on the ground...

Actually, let me explain what I want to do: I want to have an object in a world that I will position in an arbitrary location, resize and rescale it. Then, when I press a key, I would like to enable the physics engine and have the object fall. It may be easer to show me how to do that. I've followed the physics2 example, but will need more help.
Thanks very much,

Alex from RECVEB