How to debug PHP in eclipse in an external browser rather than internal?

How can I make eclipse launch and debug a site on the default browser instead of the interal browser?

I'm using MacOSX, Eclipse PDT 3.0.2 with the Zend Debugger.

Solution

Eclipse > Preferences > General > Web Browser.

Select the option for 'Use external web browser', and leave the 'Default system web browser' box ticked.