Hi they do appear quiet difficult at first at you can only see half of the screws, what you have to do is equip your self with a star type screw driver which can be purchased forom most places such as B&Q or maplins.
Undo the visable screws and then the plastic grill that extends from the badge to the headllamps. Once this is removed it exposes several more screw and hey preso. they should pull right out.
P.s where were you going to order your lights from, I got them for £200 with free postage though Chad. A saving of £50 from the below site
I did not have to adjust the lights as they were angled fine, and unfortunately there is no adjustment motor just little clogs that when turn do the same job.
I just got mine so I'm glad you posted this!!! Although after 20 mins with a screwdriver disassembling the front of my car I have decided to play the female card and let my mate do it!
Try this link for the black ones like I've bought or