Currently I have Mac OS X and MS Vista & XP installed. I used rEFIT and am able to boot to which ever OS I want. I don't have experience in Parallel or VMware. My question is.. I would like to run a MS OS when I am in MAC OS X? I DL and installed parallel. Parallel however requires me to install MS OS in order to create a new installation. I do not want to do this as I have successfully installed and configured Vista and XP. Am I doing this right? What software or procedure do I need to do in order to run MS OS while I am in MAC OS X? Thank you.