Login to your VPS via SSH (we recommend using putty)

Perform the following commands one by one:

rm -fv cmq.tgz
wget http://www.configserver.com/free/cmq.tgz
tar -xzf cmq.tgz
cd cmq
sh install.sh

Once these commands have been performed, log into WHM on your VPS.

Locate the "Plugins" tier, which is at the bottom of the left hand menu and it will be listed there.