I purchased an OEM Windows XP OS disk and had a tech person install it for me the first time - in which he had said he had problems at the time with the product key that was included with it. He was able to get it working though and I have since had the validation programs in the Microsoft sites validate it since then without a problem. Well, my system crashed and I'm trying to re-install. It is again now telling me the product key is invalid - I triple checked the key and it matches the key that came with the disk - 25 digit code. I was looking at your product here and was trying to figure out how it could help me and not sure what I would need to do as your product says that it extracts the product code from the computer, but without the computer being able to log into windows, how would I use the program to access a folder / file? I am contacting you on a separate computer using a different OS. Can you help me out with this issue?