Your mileage to install any OS on unsupported hardware will vary, in particular when trying to install an old and obsolete version. You may have more luck choosing a desktop Linux distribution such as Fedora or Ubuntu or use Windows and install Oracle Linux under a virtualization product like free Oracle VirtualBox.
Your very last resort if you insist to install Enterprise Linux on your computer might be to compile the driver from source code and install the necessary kernel support yourself or check http://elrepo.org/tiki/tiki-index.php and use Oracle Linux with the original RHEL kernel.
Oracle VM Server will not help you. Oracle VM server is a type 1 hypervisor which installs it's own system software, repalcing any existing OS. You will run into the same trouble. What you need is a type 2 virtualization, such as Oracle VM VirtualBox.