You can extract textures and sounds using MultiEx Commander. It doesn't give proper folder hierarchy (or even names, for that matter), but you can poke around some before we get the real deal. I was using the shareware version. The registered version might be more useful.
I can't be held liable for any damage you do, of course.
http://multiex.xentax.com/
[ October 31, 2007, 07:23 PM: Message edited by: Stirling ]