To switch from MPH to KPH, turn the display on (ignition ON or start car) then turn the right setting button (clock face button between Tach and Clock/Temp and Fuel cluster) anti-clockwise and hold for 5 sec.
That's all there is to it!
For Daytime Running Lights -
http://www.whiteson.org/boxster/mods/drl/ - takes about 5 min.
Good Luck!