Save your keyboard set, and you can find on windows:
C:\Users\User Name\AppData\Roaming\Adobe\InDesign\Version\Language\InDesign Shortcut Sets
then copy and paste.
For Mac the folder should be in Hard Drive/Users/<USER>/Library/Preferences/Adobe InDesign/<Version #>/<Language>/
Since 10.7 this has been a hidden folder, so if you don't know how to find it see Access hidden user library files | Mac OS 10.7 Lion