Ok I managed to do it, here's the instructions for those that wish to do the same.
1 - Fristly download the Fedora disks.
2 - You'll also need the anacoda-runtime.rpm, for your version (I have redhat 8.0) you'll need this later in step 3.
3 - I found a script and a brief article here :
http://www.linuxcompatible.org/story23334.html
Download the script called : mkdvdiso.sh
I needed to make a few changes to the script because it used root filesystem to extract the iso images and I didn't have the free space. The DVD iso images is about 1.9GB + you'll need about another 2GB or so for iso extraction.
What the script does is mount the Fedora disks and copies the data to a temporary area (your DVD data). Once its completed the copy, it uses this newly created DVD data to create ISO Image and make it bootable.
Once its created the DVD.ISO image it will create and insert the MD5hash sum thats used to check the media during installation. This is where the anaconda-runtime files are needed.
Once I had figured out the space problem and the anaconda-runtime files needed it worked without problems. I then used Nero to burn the images to DVD. I ran a media check on a couple of different DVD drives and it passed each time.
Good Luck
Keith