Hello All, Only my second post so go easy on me. I am seriously considering buying a 2005 reg A4 Avant with what is being described as Xenon + Headlights. I know what Xenons are but what are Xenon +? Secondly, I have had a look at a few others with Xenons that appear to have a second button next to the light control on the right of the dash - what is this for as the car I am interested in does not have this? Lastly, we're driving to France this month, can I adjust the headlights myself? Thanks for any replies and help you can give, any buying tips would be brilliant as this is my first Audi (Am ditching the BMW!!) Cheers!