Thanks for clarifying that for everyone ghonma, and thanks for the reply.  I don't have a current version of Photoshop -- I do very little still work, so I just use GIMP and PP10 for all my still graphics needs.  It does literally call it ID, and it shows up in AE as a layer called ID.  

I looked up various "ID's" in the Poser materials room (you can just click on an object and it will show you the ID number down at the bottom) to see if maybe I wasn't guessing a valid number.  I was off, as most are in the 100's or more, but still no dice.  The AE ID Matte effect is very basic (you just choose an ID number, and have some other basic options like feathering) but it doesn't seem to recognize it.

You said the pass does show up in PS and Nuke ... but does it actually WORK in those apps ... that is can you actually extract individual objects and/or textures.  Because, like I said, it does show up in AE, it just doesn't work, as far as I can tell.

Thanks!

 

-Tim