Set this as a placeholder here:
topic605184.html#p6681560
See it kinda behind the CD changer?
I honestly just went at it with no instructions, but if I were to guess, the FSM would have it under
1. The air conditioning, heating section for the filter
which would reference
2. The interior body & trim section on removing the glove box
EDIT:
Sorry, I checked and there's nothing descriptive in my pictures, just the type of filter I used and how the old one looked.
Here are the official instructions:
Page 121
http://www.nicoclub.com/service-manual?fsm=M/2003/atc