Getting rid of unwanted RPM

Hi all, I installed an RPM from the net which I wish to uninstall. It is the VM mail reader for Emacs. If I type: rpm -e vm I get the output: var/tmp/rpm-tmp.56007: install-info: command not found execution of vm-6.72-2 script failed, exit status 127 Any help appreciated on how I can get rid of this package! Thanks, Saqib