Replacing Xenon head light bulb

[kaiat]

Although there is a nice informative thread here about changing head light bulbs, I am now to replace the bulbs in my Xenon head lights. I was just wondering if anyone have done this before and have some experiences to share. This is the original Xenon lamps we are talking about and no aftermarket mod. I have already noticed that there is no way avoiding removing the front bumper and head lamps when it comes to Xenons, but that is OK, I have done that before and it was an easy job.