Martin Deutsch wrote:
recognize the overseas magstrip/card and will allow me to sign.

This (current) page on the Visa site has tips on what to do if you
have problems:
http://usa.visa.com/personal/using_v...avel_tips.html

Oh, thanks so much! I'm going to print out some appropriate passages to
carry.

Maybe this time next year LT/Oyster Card will have figured out how to
take my money on-line ;-)

Cat