Welcome to the forums.
First off, the install scripts are for legacy hardware and not your X1300.
If you have all of the software development tools and libraries installed, you should be able to just run ./ati-driver-file-name.run --buildpkg Fedora/FC6 and it will generate the needed RPMs. When that is done, you can then install the resulting RPMs (using rpm -ivh syntax).
After that, reboot or restart X and you should be good to go.