Remapping keys
Depending on whether you have a European or American L7, you may need to remap your Push To Talk button to the Smart Key to coincide with what is going on with the remapping table below. To do this open seem "0032_0001" and at offset "0C", change the value from "01" to "03". Then open seem "005b_0001" and at offset "17", change the value from "40" to "15". I have a European model and I didn't have to change anything.
Here are the names for some of the buttons, just to be clear when reading the table:

Follow the information in this table carefully, I messed around with everything here and it all worked except for the mixed results I had with swapping the make and answer calls button with the power on and off button.
This table represents the data found in seem "005b_0001". I'd back up your original seem before messing with it here. There are three columns, the offset for the key you want to modify, the name of the key and the value that should go in that offset. So, let's say you want to swap keys "1" and "9" to make your phone harder to use. You would go to offset "00" and enter the value "09" and then go to offset "08" and enter the value "01".
| offset | key / button | value |
| 00 | key 1 | 01 |
| 01 | key 2 | 02 |
| 02 | key 3 | 03 |
| 03 | key 4 | 04 |
| 04 | key 5 | 05 |
| 05 | key 6 | 06 |
| 06 | key 7 | 07 |
| 07 | key 8 | 08 |
| 08 | key 9 | 09 |
| 09 | key * | 0A |
| 0A | key 0 | 00 |
| 0B | key # | 0B |
| 0C | make / answer calls | 12 |
| 0D | turn on & off | 11 |
| 0E | right soft key | 0F |
| 0F | left soft key | 0E |
| 10 | DO NOT CHANGE | 2C |
| 11 | menu key | 14 |
| 12 | DO NOT CHANGE | 2D |
| 13 | volume / menu up | 17 |
| 14 | volume / menu down | 18 |
| 15 | DO NOT CHANGE | 26 |
| 16 | extended key | 3F |
| 17 | smart key / Push To Talk | 15 |
The value "3F" that I assigned to my extended key is used to launch the still camera. Here's some other things that you can assign to whatever key you'd like. Merely enter their value into the key map above.
16 - volume up
19 - volume up
1A - volume down
21 - voice commands
2B - voice commands
2C - arrow up
2D - arrow down
2E - arrow right
32 - power on
33 - power on
3E - menu
3D - power off
41 - PTT
42 - web browser