Microsoft office 2007 Student Edition

Hello-

I mistakenly, well ok I stupidly threw the box away that had the product key on it. And when I took my laptop in the get fixed they replaced the hard drive without backing it up. Anyone able to help me figure out what if anything I can do to get a product key? The other thing I didn’t do is register it, so there goes that route.
Thanks much,
Blonde (this probably had something to do with it 🙂 in Calif-