This module requires rrdtool 1.2.x and the RRDs module to be 
installed. They are available in the rrdtool distribution:
 http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/pub/rrdtool.tar.gz
Do you want me to install it for you right now ([y]/n)?
You need to be root to do this.