20 tips for using plastic on vacation - MSN Money

Forget about money changers and traveler’s checks. Credit cards and ATM cards are the now best way to pay for things or get cash when you’re out of the country. Here are some things you should know about using your credit card and ATM card when you’re out of town.

Here is another page that has very good information on getting the best currency exchange rate for your credit and ATM cards.