Redeeming Original Mass Effect Cd Key

@davidlovesjava Yes, as long as you still have the CD key, you can redeem through Origin (unless the game has previously been associated with another EA account, of course). 
To redeem a CD key, click on 'Origin' on the top of the Origin application and select 'redeem product code' or 'add game'. Type your CD key when prompted, and your game should be added to your library, ready to download and install.