25 Digit Product Key

[Vidhi]

I have some Licenced Software CDs with me. It all loaded in various PCs.
To match the CDs with the PCs , I need to check the 25 digit Product Key.

If I check with the Microsoft help it gives me only the Product ID.
Can anyone please help me how to find the 25 Digit Product Key ?

Vidhi

 

[Mark.]

Use Belarc Advisor to find keys;
http://www.belarc.com/free_download.html