ddobsonsr :
i tried that download and it would not take the product key that came with the system
If you have a retail code for a Win 7 OS then you can down load from that link. The Key at this point is not really relevant since it just verifies you have a product key to allow the download. The key matters when you actuall install it on the machine, it will ask for it there.
ATTENTION: you are trying to use what is called an OEM product key on a non OEM motherboard. the key
Will Not authenticate with that motherboard since OEM codes are tied to motherboards. Now you can try to call Microsoft when it fails to verify authenticity of the OS and try and explain the board went bad and you need to change it. Sometimes they will grant a new product code for that motherboard and sometimes not. It is a crap shoot on the chances. So just be warned that the OS will not validate and become Genuine using the original OEM key and you will need to call Microsoft and talk to a tech.