( There is no apt-get in CentOS ! )
# yum deplist yum : Which you of course can't do with no 'yum'.
The dependency list is here :
python : 2.4.3-27.el5
python-urlgrabber.noarch 3.1.0-5.el5
yum-metadata-parser : 1.1.2-3.el5.centos
python-sqlite : 1.1.7-1.2.1
yum.noarch 3.2.22-26.el5.centos
yum-fastestmirror.noarch 1.1.16-14.el5.centos.1
rpm-python : 4.4.2.3-18.el5
rpm : 4.4.2.3-18.el5
python-elementtree : 1.2.6-5
python-iniparse.noarch 0.2.3-4.el5
You can get the packages here
http://mirror.centos.org/centos/5.5/
os/ : Packages for i386 or x86_64
updates/ : for i386 or x86_64 .
The command 'uname -a' will tell, if you require i386 or x86_64 packages.
( The packages are on the install DVD / cd set too, unless it's a live cd.)
The packages can then be installed with # 'rpm -Uvh --force <package>'.
..