Moving an iMovie-11 'work in progress' moving from one system to another

I just discovered that 'system a' has no DvD burner. System B has one. I can drop ilife onto system B, but ... which of the collection of 'import/export' mechanisms makes sense here to use the B drive if the movie is under construction on A? Heck, can I just somewhow share the 'media browser' and just do the DVD part of the process on System B?