It's not in the filesystem, you should be able to find it in the menus somewhere or by right clicking on the main partition. I don't know what software you're using.
[edit] Never mind, arbin got it for me.
edited 1:29 AM EDT October 9, 2011
[edit] Located decompression at 801666F0, should just be a matter of time now, we'll see how much time I get to study it.