Could someone point me to somewhere I can get basic info on air passes? I am living in Europe (and have my little Belgian residency card to prove it!) and, since I'm an American, travel back and forth at least 2-3 times per year. In fact, I'm doing it again next week, and I just did it in September. Any info would be much appreciated! Since this is probably old news to everyone else, if anyone who can help would e-mail me at [email protected] directly, I'd be grateful.