Considering Nuendo is French for "Condom" I would strongly discourage you from making this particular purchase.
If it's the software program you speak of.. well then I would suggest that you contact Steinberg and see if his License is transferrable to you. His program is registered under his name.
I'd definitely check about license transferring. I do know that you can transfer a Cubase SX license for $50, but I'm not positive about the other products. I would *assume* that you could, but call and check.