I am relatively new to Macs and would be grateful for any assistance anyone can lend on this. I am looking to clear space on my iMac to add Tiger and iLife 06. Since I don't yet have an External HD, I am trying to clear space on my drive by backing up my iMovie files to DVD. Is it possible to burn iMovie projects that are bigger than 4.7 GB (4.3 actually) to DVD-Rs? If so, how? If I do burn to DVDs and need to use more than one, do I just insert multiple discs without losing any data? By dropping the whole project onto a DVD-R, I assume this is in a data disc which won't play the movie, but will preserve all the shots, audio, transitions, etc in the project which can subsequently be imported and used again, if necessary? Thanks as I appreciate any assistance anyone can lend.