Won't Accept Windows 7 Product Code

Installing OEM version of Windows 7 on new MacBook Pro via bootcamp and everything goes fine until it asks for the 25 digit product code. The first time I tried I could hardly make out the code with a magnifying glass and thought that was the problem. I was able to return the software and obtain a more legible copy and the same thing. I had 2 different people read it so I'm sure I have it right this time. The version of the software I'm using is supposed to be comparable for this use according to the reviews on the site I bought it. Anyone know of a solution?

 

Thanks guys.

It should have been the same version of Windows because it was on jacket of the wrapped disk. Says Professional on the disk and jacket.

I think I had the right code since 2 people came up with same code without comparing notes. Wish they'd come up with a different system of transferring the code.