Originally Posted by Aastii
My point is by saying "a little upgrade shouldn't void it" well I agree, but lots of little things mount up to a big thing. Over those 10 years you may have upgraded and upgraded again, you still have the same components you listed, but it isn't even close to the original system. So far as Microsoft are concerned, it isn't about a performance upgrade or "it is just a small upgrade", you do a significant upgrade, you no longer have the right to have a liscence for the original system, because you aren't on the original system, which is absolutely correct
I think that we have the same Idea, just saying it different. I have no desire to further side track this thread so I'll bow out of the conversation.
Now seeing as how the Upgrade usually isn't OEM (I have never seen one that is) That could be transfered, but I think Aastii has a point here and you should buy a new copy. Being the original is vista, you might just want to buy a regular copy of Windows 7 and be done with it.