So I can install Vista, run this program you speak of and it will tell me what serial goes to the install CD? Assuming I can find a copy of Vista? Or if my friend wants to go back to Vista? I would think on this hardware Vista would be slower than 7.
LOL...No Kona. It's too late now. You would have to have done it before installing Win7. If you used it now, it would only show you the key you used when you installed Windows 7.
For the record. A key does not belong to the install disc.
Example, I own a Windows 8 Pro key. The key is what I paid for. I can use that key with any Windows 8 Pro disc, ISO, or download.
Say I lose my disc and need to reinstall. I can borrow a Win8 Pro disc from a friend, and use my paid for key with his disc, and be legit.