Well, I just put my Osrams in, and I have a couple personal updates to Geezers list above...
3) The spring wire that holds the lamps in the housing... the folded over piece on my bike had to be pushed not in towards the center of the lamp, but pushed towards the front of the bike, and then rotated counter-clockwise (05, not sure if Geezer's is the same year config.). After doing this, the wire spring assembly rotates out of the way (to the left) to give access to the bulb. Be careful, the bulbs don't have anything holding them in at this point, and can fall out/down from the housing(not a big problem if it's a busted bulb... more important if you are just replacing working stock bulbs.)
5) The 3 tabs on the back of the bulb, when inserted into the housing sit on the left, top, and right sides. There is no tab on the bottom when properly oriented.
6) Reverse the process above to reattach the wire retainer. How to do this is fairly obvious once you've undone it in step 3.
I also found the left side to be easier to do (not intefered with due to the location of the battery) and did that one first. I also found that turning the bars TOWARDS the light you're changing gives you the most working room, if you're not removing the fairing pieces. Even then, you're still working mostly by feel on the right side lamp.
I'd also consider this a "do in your garage the first time" activity, because I sure wouldn't want to try and figure this out on the side of the road at night if I hadn't done it once already...