First off I am getting a new 1.2ghz 12" ibook in january and am getting a firewire dvd burner. I have been on these boards for about a week and still need some clarification on some things. I know there is a hack that will allow idvd to burn to this external drive but does this void my warranty? Do the new g4 ibooks support an external display at a different resolution than the ibooks display. If so can i turn the original display off and use only the external display. If so can I then close the lid and do clamshell mode using the external monitor only. And do the hacks that allow for you to do this void the warranty. I have been looking in about two other forums for this info and am still not clear. thanks in advance.