I'm currently on a trip using a borrowed Macbook and need to install a small codec (the x264 Quicktime codec for Mac) in order to properly export a video from iMovie, which I have to have done in the next few hours in order to upload for a film class. However, when I try to install the x264 codec it asks me for the administrator name and password in order to "allow Installer to make changes." I called the friend I borrowed it from but he doesn't know what it would be since it's technically not his Macbook either -- it's a spare from his job that he lent me. He can find out the password tomorrow when the IT guy for his office is back in but that doesn't do me much good since I need this done today. So my question is: is there any way to get around this without having to enter the admin password? Any trick I can use to bypass that login screen or any method to install the x264 codec without having to authenticate it with an admin password first? For the past half hour I've just been making random guesses at the password out of desperation so any better solution would be much appreciated. Thanks! EDIT: If it makes a difference, the Macbook is running Mac OS X Version 10.5.7 with iMovie '09.