to remap the keys.
Using a reg editor, the key you want to edit is:
\HKLM\Software\Motorola\Keypad
The original settings were:
0x14 - SPKPHN
0x34 = SIDEBACK
I switched those 2 around so 14 was now SIDEBACK and 34 is now SPKPHN., remember you need to restart your phone after making these changes to take effect.
This actually works really since now the speakerphone button is now a back button, so its real useful for backspacing when typing.
Also the side bar is now easier to use for voice commands and speakerphone.
PS: for Telus Q users with locked registry, you need to use the following cab to unlock your registry first:
http://www.mobilesource.ca/files/secpolicies.cab