Hi All,
There's not really much more I can add to this, because a great deal of good information has already been posted.
We brought our dog from San Francisco to Zurich a couple of years ago, and of course stressed quite a bit. But, as Meloncollie points out, it's good to avoid connections - particularly in extreme temperatures, as the animals will spend a certain amount of time on the tarmac! (We flew direct from SFO to Frankfurt and then drove to Zurich)
As for the chips, our dog now has three, as neither of the two she had prior to our trip here were readable. To be on the safe side, I rented a reader from Avid for one of the chips, then upon arrival I finally got another chip from a company called DATAMARS (at the vet here in Zurich).
I hope your questions were answered here. Please let us know if there's anything else. ... Meanwhile, check out this site:
http://groups.yahoo.com/group/Dogs-Switzerland/
There's a lot of good info and support here as well.
All the best,
EP