mkisofs 1.14 and dvd

Hi guys

Is it possible to make an iso image, suitable for burning to a dvd, with
the version of mkisofs that comes with Valhalla?

Ive tried making an image using the normal procedure, which seems to be
pretty much default (mkisofs -o file.iso data/) and it creates the iso
file fine.  However, when trying to burn to a dvd on a windows machine
(after transferring) the dvd is not readable.  I can burn a dvd using
nero, but in just writes the file.iso to the dvd, not the individual
files contained in the iso.  If I try and use nero, and go file, open,
browse to the iso, as recommended by a colleague, the dvd writes, but
again, is not readable.  

Is this a problem with the way im making the iso file?

Do I need to upgrade my version of mkisofs to enable it to make 4.3 gig
iso files correctly?  Currently I dont see any options when running
mkisofs by itself, for DVD images, or a term ive heard little of: udf.

Please assist if possible, my project relies on mkisofs.

Regards,
Dan Haines

Metservice,
New Zealand