Is it possible (and how would one go about it) to reload just the Mail application from the Jaguar CD? After updating to 10.2.4, Mail ceased to function. Thanks in advance.
Give Pacifist, available here, a shot. It will let you extract or install selected items from .pkg files. If you choose to "Install" something it will install your selection to it's default location (i.e.- If you choose to install Mail.app, Pacifist will install it in /Applications).