Crashed hard drive

Question

My hard drive crashed and I lost all data including microsoft office 2007 plus. I also lost the packaging it came in. I bought it from journeyed.com for school. I don't know if you're familiar with that site. My professor gave it to us. I still have the cd and I want to install it in my new hard drive but I can't without the product key. I have proof of purchase of the software. My email is:[e-mail] Can you help me please? I need the program for school.