It took a bit of work, but I was able to remove all 10 case screws with a small slotted screwdriver. While I slightly damaged a few of the screw heads, I should be able to put them back in. If you're going to work on the new MacBook Air, I recommend getting a screwdriver specifically made for this type of screw.
Photo by: Bill Detwiler / TechRepublic
Caption by: Bill Detwiler