How to adjust headlamps for driving in France?

[Big Dave]

I've been lurking on the forum for some time but never seen an answer to this question before. I have a 2003 D3 4.2L (absolutely brilliant car) with halogen headlamps. Later this year I'll be making a couple of trips across the Channel, how do I adjust the headlamps for driving on the right?

I've looked in the owner's manual - nothing. I've searched on-line - nothing. Someone must know, please....