I just finished up my first DVD project and successfully burned a disk using iDVD 4. Now I would like to free up the disk space that all the media files are taking up because I am on a 40 GB PBook and have no external HD. I used two iMovie projects, one at 3.23 GB and another at 1.86 GB. If I trash these I will not be able to burn another copy from iDVD or work on the project any more because iDVD simple links to these media files, correct? If I archive my iDVD project it will be over 7 GB which is more than the media files are taking up right now, and too big to store as data on a DVD as well. is there any way to free up my disk space and still have the files somewhat close to available if I want to add more to the project later? I thought maybe doing archive and then disk image but I only have 9.8 GB available right now and I don't know whether that's enough to do that. any ideas? Thanks in advance.