http://wiki.guildwars.com/wiki/Error
227 - "We don't recognize your account login information. Please try again.
-Is your account name spelled correctly?
-Have you typed and capitalized your password correctly?
-Have you forgotten your password? Reset my password
-Did you forget your account name? Get help from Customer Support
-Have you correctly typed the name of a character on your account?"
Make sure you entered your account information correctly. Check to make sure you registered an account with that name/address, and that you have properly spelled a valid character name.