Are you actually going to use the graphic user interface version of the program, or just the daemon? Qt is only needed for GUIs written in it, and centos "servers" typically aren't installed with an xwindow system.
You do not need to do any chown commands on Bitcoin, especially giving it root. That would be a bad idea. You can simply uncompress it in a user home directory and run bin/bitcoind.
Additionally, 0.9.3+ is compiled with QT5.2, you should be using that version or higher on your system, the instructions are old.
To install Qt, this is going to be too difficult for you if you don't know how to run a program:
http://www.qtcentre.org/threads/57624-How-to-Install-Qt-5-and-Qwt-on-CentOS-6?highlight=centosInstead include this repo using instructions from this message:
https://lists.fedoraproject.org/pipermail/fedora-kde/2013-March/012437.htmlIt has qt5-qtbase-* in the testing repo, which should get the job done
http://download.kdeforge.net/kde-redhat/redhat/6/x86_64/RPMS.testing/