Windows2003 under the garbled how to solve

How to solve the garbled characters under windows2003
I windowsxp under the normal page, placed in the windows2003 under the Chinese language has become garbled, the configuration environment is only in WinXP under the mode of loading PHP, in the win2003 is used by the CGI method, the test page only two:
test1.php
Dsad

test2.php
echo urldecode ($_get[' testvalue ');
?>

Please help to see the master, in addition: Apache in the httpd.conf has been added to the "Adddefaultcharset utf-8". Apache version is 2.2.3,php version: 5.1.6

------Solution--------------------
Header ("content-type:text/html; Charset=utf-8 ");
------Solution--------------------
Can not add, may be your browser put, no selection characters automatically

or add a header.

Header ("content-type:text/html; Charset=utf-8 ");

