Hi,
Just for my own reference and some other poor people out there trying to get this to work:
zend_extension = "C:\xampp\php\ext\php_xdebug-2.0.5-5.3-vc6.dll"
[xdebug]
xdebug.remote_enable=on
xdebug.remote_host=127.0.0.1
xdebug.remote_port=9000
xdebug.remote_handler="dbgp"