What is this error sir?

[lastgame2007]

<br /><b>Warning</b>: date() [<a href='function.date'>function.date</a>]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Los_Angeles' for '-8.0/no DST' instead in <b>C:\xampp\htdocs\MEA\adminpage.php</b> on line <b>447</b><br />20-02-2012

[vaultdweller123]

set your right timezone date_default_timezone_set('your_timezone');
http://nl3.php.net/manual/en/timezones.php

OR

edit this on the your php.ini, ex.

date.timezone = "America/Los_Angeles"

[diafol]

You don't provide any code for us to check. Christ, my crystal ball is getting some good use these days - it's almost as shiny as my head! :)