Blah - thought I had it sussed - DLed an app called Pacifist which let me look inside packages etc. on the Install discs. Found the /Applications folder under one of the Essentials packages, found Terminal.app, chose to 'install to default location' and cool, it put it into my /Applications/Utilities directory on the HD. But when I go to launch it I get this:
I guess my reaction now is WTF ??? This is on a MacBook running Leopard 10.5.5 btw.