Installing R on CentOS 5.4 64 bit

create R.repo file in /etc/yum.repos.d/

[R-project]
name=R project for Statistical Computing repository
baseurl=http://rm.mirror.garr.it/mirrors/CRAN/bin/linux/redhat/el5/x86_64/
failovermethod=priority
enabled=1
gpgcheck=0
priority=15

yum install R

Propograte rpms across cluster..
/var/cache/yum/R-project/packages/R-2.10.0-2.el5.x86_64.rpm