Screen Spanning iMac

Mac Central unveils a great hack to allow screen spanning on low-end Macs that are supposed to do only screen mirroring -- they have a picture of a new iMac G5 driving a second flat screen independantly from the iMac's own screen. It occurs that Apple ships video cards that have spanning capability, but locks them to mirroring through the firmware. The hack, which simply changes that firmware setting, is reversible and a utility is provided to handle it without requiring Terminal skills.