solution for croatian, serbian, ...etc
The solution was :
go to the folder: client: find header.inc.php --cange charset to =windows-1250
also set charset in mysql.php and in staff.inc.php
the one problem still remains , when reciving email notification of new ticket created, ther is no vieweble characters of croatin chars. for example : čćšđž can not been seen only utf charaters. if any one have solution for this art it will be much appriciated.