unable to install Xerox pjhaser 3121 in CentOS5.2 final

[root@localhost phaser 3117]# ls
autorun cups help locale misc README.txt setup.data
bin data icon.xpm Manual ppd scripts setup.sh
[root@localhost phaser 3117]# ./setup.sh
bash: ./setup.sh: Permission denied
[root@localhost phaser 3117]# ./setup.sh
/root/.setup5893: error while loading shared libraries: libgtk-1.2.so.0: cannot open shared object file: No such file or directory
[root@localhost phaser 3117]# ls
autorun cups help locale misc README.txt setup.data
bin data icon.xpm Manual ppd scripts setup.sh
[root@localhost phaser 3117]# ./setup.sh
/root/.setup5916: error while loading shared libraries: libgtk-1.2.so.0: cannot open shared object file: No such file or directory
[root@localhost phaser 3117]# yum install libgtk-1.2.so.0
base 100% |=========================| 1.1 kB 00:00
primary.xml.gz 100% |=========================| 878 kB 00:15
base : ################################################## 2508/2508
updates 100% |=========================| 951 B 00:00
http://centos.aol.in/5.3/updates/i386/repodata/primary.xml.gz: [Errno 4] IOError: <urlopen error (-2, 'Name or service not known')>
Trying other mirror.
primary.xml.gz 100% |=========================| 152 kB 00:35
updates : ################################################## 246/246
addons 100% |=========================| 951 B 00:00
primary.xml.gz 100% |=========================| 157 B 00:00
extras 100% |=========================| 1.1 kB 00:00
primary.xml.gz 100% |=========================| 96 kB 00:03
extras : ################################################## 309/309
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package gtk+.i386 1:1.2.10-56.el5 set to be updated
--> Processing Dependency: gdk-pixbuf >= 0.18.0 for package: gtk+
--> Processing Dependency: libgmodule-1.2.so.0 for package: gtk+
--> Processing Dependency: libglib-1.2.so.0 for package: gtk+
--> Processing Dependency: glib >= 1:1.2.10 for package: gtk+
--> Running transaction check
---> Package glib.i386 1:1.2.10-20.el5 set to be updated
---> Package gdk-pixbuf.i386 1:0.22.0-25.el5 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================
 Package Arch Version Repository Size
=============================================================================
Installing for dependencies:
 gdk-pixbuf i386 1:0.22.0-25.el5 base 231 k
 glib i386 1:1.2.10-20.el5 base 137 k
 gtk+ i386 1:1.2.10-56.el5 base 923 k

Transaction Summary
=============================================================================
Install 3 Package(s)
Update 0 Package(s)
Remove 0 Package(s)

Total download size: 1.3 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): gtk+-1.2.10-56.el5 100% |=========================| 923 kB 00:12
(2/3): gdk-pixbuf-0.22.0- 100% |=========================| 231 kB 00:04
(3/3): glib-1.2.10-20.el5 100% |=========================| 137 kB 00:02
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID e8562897
Importing GPG key 0xE8562897 "CentOS-5 Key (CentOS 5 Official Signing Key) <email address hidden>" from http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing: glib ######################### [1/3]
  Installing: gtk+ ######################### [2/3]
  Installing: gdk-pixbuf ######################### [3/3]

Dependency Installed: gdk-pixbuf.i386 1:0.22.0-25.el5 glib.i386 1:1.2.10-20.el5 gtk+.i386 1:1.2.10-56.el5
Complete!
[root@localhost phaser 3117]# ./setup.sh
        package cups-1.2.4-11.18.el5 (which is newer than cups-1.1.15-1) is already installed
        file /usr/lib/libcups.so.2 from install of cups-1.1.15-1 conflicts with file from package cups-libs-1.2.4-11.18.el5
        file /usr/lib/libcupsimage.so.2 from install of cups-1.1.15-1 conflicts with file from package cups-libs-1.2.4-11.18.el5
Unable to install RPM file: 'cups/redhat/cups.i386.rpm'
Stopping cups: [ OK ]
Starting cups: [ OK ]
scheduler is running
You have new mail in /var/spool/mail/root
[root@localhost phaser 3117]#
here it launch the Linux printer configure window .
in this window i try to add a new printer it says
"add-printer failed: client-error-not-authorized"