iTV contains a kernel extension for standard PCI cards with Booktree BT848/878 chips and small application for watching tv and listening radio.

You should be familiar with the Mac OS X command line.

Furthermore the Kernel extension an the application works fine in an Apple Developer Transition Kit machine.
If you are already familiar with the XTelevision.app you should know that the new driver isn't compatible with XTelevision.app and the iTV.app isn't compatible with the old kernel extension.

Make sure that the old driver isn't loaded before you try load the new driver.