Warning in order information date()...

Warning: date() [function.date]: it is not safe to rely on the systems 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 mostlikely misspelled the timezone identifier.We selected 'Europe/Helsinki' for '2.0/no DST' instead in C:\Inetpub\wwwroot\phpshop\web-inf\modules\order\lib\ps_order.inc on line 116 29jun2004.01:06 P 5.31
and the same in admin\sales activity

thanks