Its sometimes hard to memorize the password because today almost for all websites we'd like the mixture of numbers and alphabets for the passwords, of-late I found few sites recently asking me to supply a minimum of one letter in lower or capital. When you change MSN password use both alphabet and numbers. Many messengers and chat clients invite a minimum of 8 characters passwords and will use the mixture of both alphabets and numbers, anybody of these two isn't accepted since you would like a mixture of both.