Well you can only send e-mail out once you have set up a working SMTP server configuration. I'm not sure what tutorial you followed, but the error message your getting is your best clue:

"Check user name and password or that you have access to smtp.googlemail.com"

First I'd double check that you have your correct *gmail* username/password. With gmail your username is actually your full gmail e-mail address.

If that still doesn't work then just carefully follow this:

http://tabletschool.blogspot.com/200...use-gmail.html