then for the desktop install, buy the required support contract .
$49 to $299 per year
then register your install!!!
if you do not register your paid for install, then you will be unable to install software .
Except for what is on the dvd and that is it .
No updates, no new packages
no new programs
if you do not intend on buying the license then do not use RHEL 6
instead install one of the FREE rebuilds
CentOS 6.3 or ScientificLinux 6.3