yup yup!
just make sure your cd'd into the same dir where your DVD was constructed and do:
growisofs -Z /dev/dvd -dvd-video DVD/
and it should burn fine!
that's why I always test it first with:
xine dvd:/full/path/to/DVD/VIDEO_TS/
plus if you have a DVD-RW laying around, it saves discs if there's a prob
