OK so would it be better to go with the Retail version just to be safe or is it fine to just get the OEM since I really only plan on putting it on 1 computer anyways? I mean as long as I don't plan on putting it on another computer it should be fine right? Now netbooger you said that if you upgrade you are "supposed" to buy a new version. Now is that for ALL upgrades including GPU's, DVD drive, Sound cards and other peripherals or is it for just MoBo, CPU and HDD's