This how I cross the border on 25/12/2011. Keep in mind this can change quickly.

On the thai side:

- register to counter 2 (100 bath). Have als to explain that a bike
has no passport but a green book. They need 3 copy's from the green book.

- Than have to give the bikepapers to the counter, in brown on the picture next to counter 2 (free)

- Now you can drive in Laos

Name:  Border (6).jpg
Views: 89
Size:  77.6 KB

on the Laos Side;

- Make visa on arrival (35$) to counter 5
Name:  Border (12).jpg
Views: 91
Size:  109.6 KB

- than I could pick up the papers to counter 7
Name:  Border (5).jpg
Views: 92
Size:  94.2 KB
- Than go to the customs office to counter 8
Name:  Border (2).jpg
Views: 93
Size:  112.1 KB

- Make the insurance papers next door (door under the red flag), I payed 100 bath/7days
Name:  Border (14).jpg
Views: 90
Size:  85.8 KB

- A 100m down the road you have a check point where you need to register (free)
Name:  Border.jpg
Views: 91
Size:  138.2 KB

- you are now in Laos