Moving inside the 3D space

Hi, everyone!

I'm learning to use 3D modellating in AutoCAD 2002, and would like to move
inside a 3D house.
Is there any command for walking inside the model, passing through the walls
(something like track or dooly tool present in other software packages, like
VIZ)?

I tried the command for setting the distance of the camera but, if I have a
wall in front of me, the visual keeps beeing obstructed by is (just like as
I were using the zoom tool, except for the perspective change).

Is here any way for doing what I need?

Thanx in advance.

-- 
Marco Iannaccone
[EMAIL PROTECTED]
(togliere 'FAKE' dall'indirizzo - remove 'FAKE' from the address)