Can any one tell me how to add keys for user root of remote server onto my present machine?

I am trying the ssh-keygen command but its giving a ssh-keygen command not found error. Any links to webpage of how to configure is highly appreciated!

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check this link

System Administration Toolkit: Distributed administration using SSH

In windows machine if you have cygwin installed

goto to cygwin
mkdir -p .ssh
ssh-keygen -t dsa -f .ssh/id_dsa -P ''

then append the contents of .ssh/id_dsa.pub to /export/home/buildusr/.ssh/authorized_keys(10.18.51.62)

cat id_dsa.pub >> /export/home/buildusr/.ssh/authorized_keys