Howto build your own rpm package of the Cardo font.

1)
Download the cardo font package from http://scholarsfonts.net/cardofnt.html
(Cardo98.zip) and copy it into /usr/src/redhat/SOURCES/ directory
(if you are using RedHat or Fedora based distro).

2)
Download the SPEC file from theolinux and place it under
/usr/src/redhat/SPECS/.

3)
Build the package (as root):

 rpmbuild -bp /usr/src/redhat/SPECS/fonts-Cardo-unicode.spec

4)
Install the package:

 rpm -Uvh /usr/src/redhat/RPMS/noarch/fonts-Cardo-unicode-0.98-1.noarch.rpm

NOTE, THAT YOU ARE NOT ALLOWED TO REDISTRIBUTE THE PACKAGE ON INTERNET!
For more informations, see their website!