Basically, I downloaded the .dll binary file (5.3 VC9) from http://www.xdebug.org/download.php, and put it in the PHP extension directory (C:\php\ext), then changed the php.ini to below:
uncommented this line:
added this block at the end of the file:
;; Only Zend OR (!) XDebug
I restarted my apache, but I still couldn't find the XDebug section in my phpinfo.php output. I wonder what else I need to do?
Thanks in advance!