I'm using Sony MovieShaker and Sonic DVDIT. I've created a project and burned 3 DVD-R's from it. I want to be able to create more DVD's in the future from this project, but all the files associated with this project are taking up most of my 60 Gb 'D' drive. How do I do this? Can I just make a copy of one of the DVD-R's (I haven't gotten this to work)? Which parts of the project can I safely delete? Are there other off line storeage strategies I could use? Thanks!