to use red hat RHEL6 you must have the required , paid for , support contract / license
for the desktop that is $49 to $ 299 per year
for the server - $349 to over $8600 per year
buy the required license .
install one of the free rebuilds
but the rhel documentation is free for all to read
However it will tel you to use "yum" to install needed things
And you can only do that if your RHEL install is licensed AND registered
( to register there is a handy desktop icon to click on -- but you have to be connected to the outside world )
I am running Scientific Linuc 6.3 and partitions auto mount (by default )
also you could see the CentOS wiki
and -- for samba
and the centOS docs ( really the rhel docs repackaged and stop at cent5 )
or to connect to a local machine on a lan ( not facing the outside world)
also have you read the "man"( manual ) page ?