Cannot install Zorin OS 9

Hi guys,
My first message on this forum and sorry if the question has already been asked. I downloaded Zorin OS 9. Burned it onto a DVD, but it does not boot. There is no install files! All what I have is the following:

Folders:
.disk
boot
casper
dists
install
isolinux
pics
pool
pressed

Files:
md5sum.txt (11KB)
Readme.diskdefines (1KB)
ubuntu (0KB)

By the way, my computer is set to boot from DVD.

Thanks,
Optimus

I think you did not burn an ISO, but you just made a copy of the download to your DVD.

Using an USB is easier: http://unetbootin.sourceforge.net/

Hi frits,
Thanks for your answer. I did burn the ISO I downloaded from the website. I used both ImgBurn and PowerISO to burn the ISO file, but neither one of them worked. I burned 3 DVDs, neither one of them worked.
Thanks,
Optimus.

Have you checked the md5 checksum for the image you downloaded?

Hi SteveD,
Thanks for your answer. I just checked the MD5SUM of the file I downloaded. It's exactly the same as the one from the zoringroup website.
Peace.

Did you burn at the lowest speed your burner can run at?

Hi Swarfendor437
Thanks for your answer. The first two burns were at the highest speed, but when I read one of the threads, I did another burn at the lowest speed, but I got the same problem.
Thank you,
Optimus

Have you tried the USB method?

Alternatively have you tried accessing a boot menu when starting the computer rather than changing the bios boot order?

As soon as I get back home (at work right now), I will give the USB option a try.

Hi, something else I should have asked - you did use Opera or Firefox to make the download? You did not use a download accelerator? You did not use a 'torrent'? The last two are known to fail and any other browser other than the ones quoted (and in respect of Opera 12.16 version).