Clamav install with yum in Centos

1: Create yum repository file
vi /etc/yum.repos.d/dag.repo
[dag]
name=Dag RPM Repository for RHEL5
baseurl=http://ftp.riken.jp/Linux/dag/redhat/el5/en/$basearch/dag/
enabled=1
gpgcheck=1

2: Download and import the key
wget http://dag.wieers.com/packages/RPM-GPG-KEY.dag.txt
rpm --import RPM-GPG-KEY.dag.txt

3: yum install clamd