That being made by EA the code should be on the case the CD/DVD came in. It may also be on the wrap so I hope you have not discarded that. Keep the receipt and contact EA. If you can convience them you are legit then they will generate you a new code. Good Luck MadGamer.
Btw: The manual should be on the disk...
The following is from EA's website...

Question Where is the serial number for my game?

Answer Typically the serial number is located on the back of the CD jewel case, on the lower left hand section. In cases where the game was bundled by
Gateway or purchased through
Scholastic, the serial number may be found in three other locations:
- The inside of the case
- The back of the manual
- On a separate piece of cardboard or paper
LC