Do a search, many different discussions on this... Basically, wrap each one individually, then place them into an egg carton, and make sure it is securely closed... Then put that into a well padded box... Of douse it's better described on the other posts..
Google Sterling Meadows Hatchery, she packs really well and has detailed photos of the process.
She has the same info on here somewhere... Mrs. AK Bird Brain.
Also someone got eggs from her, they posted a thread called something like "I just got eggs from Alaska". I think it was just this morning. They showed pictures of the box, the packing and the eggs.