To install the DCP 135C on Centos 6/RHEL you will need 2 driver packages, the LPR and cupswrapper, in rpm format although available in deb format if using a Debian based distro.
So download them and install with
$ sudo rpm -Uvh *.rpm
Make sure the Cups program is installed although likely it got done when you first built your system.
$ sudo yum -y install cups
Now switch on your printer and browse to localhost:631 which will bring up the Cups management screen
Use the root password and click on adding printers
Your printer should have been detected if the drivers installed correctly and should appear in the list of local printers.
Check the box which shows your printer and continue
You should now have an online printer set up and ready to go.
There is also a shell script available which sets up the printer and does a test print out should you wish to use it.