Question : yum install 7 Zip

I use CentOS 5. How can I install 7 Zip?  This does not work:

yum install p7zip
No package p7zip available.

Answer : yum install 7 Zip

First u download the zip file and sing the command for unzip the file
#unzip filename.zip
#cd filename
#./configure
#make
#make install