I'm trying to install xdebug. According to phpinfo(), the PHP XAMPP is running is version 5.2.0 and not a debug build, so that's OK. Also, in php.ini (the right one, C:\Program Files\xampp\apache\bin\php.ini), all the entries under [Zend] are commented out, so that's OK too I believe.
I've put the dll I downloaded (from pecl4win.php.net - the one for PHP 5.2.0) in a separate folder under xampp\php and put zend_extension_ts = "C:\Program Files\xampp\php\xdebug\php_xdebug.dll" in php.ini under its own [xdebug] heading.
I still can't get it to appear in phpinfo(). And I have restarted Apache. I cannot for the life of me work out what I'm doing wrong. I have also tried this using the "precompiled windows module" found on xdebug.org to no avail.