What and where is my product keys?

Question

I need to record my product keys for our auditors and of course possible reinstallation.
I have many new computers the surreal numbers.  It appears that Lenovo now does not put a sticker on any of their workstations.  I did find a command that seems to print out the information that I need;
C:\Users\cmaher>c:\windows\system32\wbem\wmic.exe csproduct list full
This seems a very handy,  So to test it out I ran this command on the older windows seven professional computer that does have a sticker on the outside and I got something that looks like the following. 
UUID=111AA1AA-11A1-11A1-1108-1AA9A1111A11
(I have put numbers were there are numbers and letters were there when letters.)
The problem is that this number doesn't seem to line up with a sticker that is on the computer, so im confused is this the key that I need or not.  Now maybe sometime in the past I did a reinstallation and maybe Microsoft validated it with a different
number I'm not sure.  But even if that's true the series of numbers in a series 8-4-4-4-12 doesn't seem to fit any key system for windows 7 that I can find on the net.  So is this my key that I need or not.

Answer 1

And more : http://pcsupport.about.com/od/productkeysactivation/tp/topkeyfinder.htm
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