Red Hat 8 is ancient...and so probably will not have the drivers to get most new hardware working.
You should install Fedora 9
It is the newest linux distribution from the people who developed red hat
It has the download links to get the OS, then burn it to CD and install. There is also support links (forums) on that page.
If you have windows already installed and wish to dual boot with linux (or replace windows altogether) you can use the windows application unetbootin
You download it in windows, then open it like any other installation wizard. It will guide you through a net-installation of many linux distributions, including Fedora 9. You do not even need to burn a CD for installation this way.
Hope this helps. Post again if you have trouble or more questions. We want to help you.