Hi beingobserverIt seems to me you are confused by the different installation options there currently are.I have written this page to explain <a href="http://eclipse.baeyens.it/installAdvice.shtml">http://eclipse.baeyens.it/installAdvice.shtml</a> the options.please read the page and if something is not clear we can discus so it becomes clear to you and I can modify the page so it becomes clearer.And here is a link to older arduino versions http://arduino.