Microsoft Office 2007 Product Key

I purchased my microsoft office at the same time i purchesed my computer and the source downloaded it for me and i guess did not install the product key, i have e-mail microsoft to find out how i can obtaine a key, i still have my origanal recipt from the purchase and everything, All i really want to know is how i can go ablout getting the product key because i am a full time student and need this software for my day to day work. Thank you.
E-mail me @ 100086938@student.georgianc.on.ca or at talk2me_now_2_@hotmail.com Any help would be Greatly appreciated.