Firefox doesn't handle the x-jsd protocol?

Hi,
  I've installed Venkman for the first time on:

Firefox 2.0.0.2
Mac OS 10.4.8

  and Tools->Javascript Debugger->Open Windows tab->Double Click on
one of the html filennames gives me the popup error:

"Firefox does not know how to open this address, because the protocol
(x-jsd) isn't associated with any program"

  I've tried modifying the about:config keys:

network.protocol-handler.app.x-jsd = /Applications/Firefox.app (I know
this is wrong, but I don't know what else to put here)
network.protocol-handler.external.x-jsd = true

..but still same behavior.

Anyone have any suggestions?

thanks in advance!
Chad Armstrong