Marc, today, USAtoday posted a valuable summary
article on which credit/debit cards to use
overseas. Pls see link below. In sum, best
credit card, Capitol one (0 % FTF); best debit
card, BA 0 cost per transaction, 0 surcharge fee..altho USAA is next best with 0 cpt, 1% exchange surcharge fee.

http://www.usatoday.com/travel/deals/inside/2009-05-21-best-overseas-credit-card_N.htm?POE=TRVISVA