[Website] php error

[singoe]

I just made a forum for my website, but whenever i go to the main page of it. i get an error at the top of the screen.

[phpBB Debug] PHP Notice: in file /index.php on line 86: date() [function.date]: 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/New_York' for '-4.0/DST' instead
[phpBB Debug] PHP Notice: in file /index.php on line 86: getdate() [function.getdate]: 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/New_York' for '-4.0/DST' instead
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4284: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4286: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4287: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4288: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)

Does anyone know how to fix this? im using phpbb3 btw

[project anthrax]

are you using joomla with wamp server?

[singoe]

Im using the latest release from the phpbb website. Im using xampp btw

[DeathKnight117]

using joomla with wamp server?

[singoe]

no, i just said i wasnt