I want information on how to install unique housings for Nextel i90c
cell phones (made by motorola).  That means installation instructions
that i do not have to purchase. The instructions must be for the
casings (housing) not just the key pad.

Here is what i found on how to do it:
1. Remove the battery and battery housing from the phone. 
2. Unscrew the antenna. 
3. Remove the silver antenna housing located in the battery compartment. 
4. Unscrew the 4 Torx T-9 screws from the back of the phone. You will
need a special T-9 Torx screwdriver (which we do not sell).
5. Open the phone and be careful not to loose any pieces or screws. 
6. Have the flip open at this point and have the keypad facing you. 
7. Push the keypad buttons out. 
8. Locate the piece of rubber on the keypad at the top that is around
a copper ribbon.
9. Unplug the connector attached to the copper ribbon by pulling up on
the connector.(Do not pull the ribbon) Tweezers or a tiny flathead
screwdriver make this part easier.
10. Remove the factory keypad. 
11. Install the Clear keypad and plug the connector back into the
circuit board. Press evenly around the entire connector.
12. Place the flashing light panel on the circuit board located
beneath where the keypad rests.
13. Take the ribbon attached to the light panel and wrap it around to
the othe side of the phone board.
14. Make sure the two copper leads are positioned to touch the two
outer battery terminal prongs.
15. Close the phone and place the screws back in. 
16. BEFORE TIGHTENING THE SCREWS, make sure you adjust the light panel
leads so that they are touching the outer two battery prongs.
17. Tighten the Torx T-9 screws, replace the antenna housing, the
antenna, and the battery and you're done!

Search Terms used:
"replace nextel phone housing"

These instructions are just on how to install the flashing keypad, not
the actual casing around the outside of the phone.  Thanks for your
help though.