[CentOS] Cannot find some packages in CentOS 6.2

Hi
   I am trying to run a set of applications (which was build and run on CentOS 5 successfully) on CentOS 6.2 (x86_64).
I can't find following packages

   fonts-chinese
   liberation-fonts
   freeradius2
   freeradius2-utils

Why are these packages not available in CentOS6?
What are the replacement for these packages?

Thanks
-miraj