Run these as route:
gpg --keyserver subkeys.pgp.net --recv-key 77CB2CF6
gpg --export --armor 77CB2CF6 | apt-key add -
Add this to /etc/apt/sources.list:
#
# OpsView #
deb http://apt.opsview.org/ubuntu hardy main
And then run:
apt-get update
apt-get install opsview-agent
And of you go! Have fun.