Two options. Both not pretty. How good are you with Linux? Why? Well, if you installed Red Hat, the error you have means you dont have a grub boot loader installed, at least not in the MBR. Secondly, is this a legit? Because the folks at Red Hat may well be able to help you, you should have a support plan...
If it does not HAVE to be Red Hat, try Fuduntu
instead...it's a roller and Fedora based. Fedora, Red Hat, they're related