Just to share some info.
I downloaded the Fedora 7 iso successfully. However when I burned the ISO using NERO 7 I had problems. The burn seemed to work fine, but it failed on the varify. Also the DVD appeared blank when i read it in Windows, LINUX etc. Basicaly goosed! I went through 6 DVDs, trying different settings etc, with the same problem.
I also tried the ISO burn on a totally differnet PC, running NERO 7, again with the same issues.
I then uninstalled NERO 7 and installed NERO 6. Guess what the ISO burn worked first time and I was able to then install Fedora 7 from it.
Hope this helps anyone having simular issues.