Capital one gives you a credit card that does not change exchange fees.
Look at # 58 in the FAQ

58.Will Capital One charge me a fee if I use my credit card overseas?
Capital One does not charge a fee for using your credit card for foreign currency transactions. Foreign purchases will be converted at the foreign exchange rate in effect at the time of posting the charge.

I am not sure what "exchange rate" they use but they do not have a fee.

http://www.capitalone.com/creditcard...y.php#58_pg_sl