Tiles stores it's settign in the registry. HKEY_CURRENT_USER\Software\Stardock\Tiles\Tiles.ini specifically.
You could run somethign like this from the command line to export it:
REGEDIT /E c:\path\TilesSetup.REG "HKEY_CURRENT_USER\Software\Stardock\Tiles\Tiles.in"
REGEDIT c:\path\TilesSetup.REG would add it back.