More about changing interior lights to LEDs:
http://x3.xbimmers.com/forums/showthread.php?t=1064169
I did manage to remove the front dome according to jonsc advice:
" It is really easy on the LCI. the entire unit is held in by those easy to open clips. Just start from one side and work your way around it should easily pop out"
However I must admit that some of the clips were quite hard/tricky to open!