bobkn said:
"you are legally entitled" - did you mean NOT legally entitled?

I'm pretty sure that we are not supposed to run two versions of Windows on a single license.

I doubt that we are supposed to run two identical versions of Windows on a single key, even if they are in a dual-boot system so that only one would be active at any moment. (Difficult to enforce, I suppose.)
I think Ztruker did say"two Windows 7 partitions with two different keys". This can actually work, right?