In an effort to prevent bots from registering PHPbb2 requires that the user register SPECIFY your own password, as is on the form, and then you will be sent a confirmation email to the email address you entered in the registration form. If you did not enter the email address correctly or used a variation of your email address in an attempt to thwart spam ie. me.nospam@here.I.am then you will never be able to log into your account.
It is imperitive that you supply a correct email address AND a password.
Mark may be able to help you IF you send him an email and can specify the email address you registered under. If it was spelled incorrectly, you might have to supply him with the correct email address so you can log in and fix the problem.
Mark CANNOT retrieve lost passwords to the best of my knowledge.
You should be able to click on Mark Thomas's email link in any of his posts.