if you need red hat .Them BUY a license for the current RHEL6.0
red hat is not FREE
-- but do some RESEARCH on red hat - it uses older and stable code - and as such not all new programs will run in rhel 5.6 or the newer rhel6.0
and is DESIGNED for the headless server first and foremost
Fedora is a very VERY fast research and development distro
and is NOT recommended for the very new to linux user .
i would look at installing the current version of Mint Linux