When I said Infinity Engine what I meant to say is Near Infinity. It allows you to look into all the parts of the game, so you can see animations, play the sound effects and see the dialogue. I looked earlier today and got the program to search for anything with the word 'Yves' in, that brought up a lot of references and a couple of the stories.
Near Infinity (and other tools) can be found here:
http://modlist.pocketplane.net/index.ph ... &cat_id=37
You just copy the downloaded file (NearInfinity.jar) into the main Torment directory. If it fails to run because you haven't got Java installed try here:
http://java.sun.com/j2se/1.4.2/download.html. The J2EE 1.4 SDK should get it working.
The Search option inside the program can be found under the menus, just type a word in, then click Find.
Hope that helps (and isn't too complicated). If you questions about this, post them and I'll see if I can help
Oh, you shouldn't need the CD's at all, as it should all be installed on the hard drive thanks to the installation. Most of this stuff is usually either hidden or in formats that are generally inaccessible.