When I created a project I am working on, for some reason, I set it for 720p, 23.98 fps. For some reason, that was the default, even though the native resolution of my clips is 1080/29.97 fps. I can see where I can view my project properties and can see my settings. But where can I change the settings to 1080p? Or does it really matter if I'm mainly creating DVDs of this project?