Hi lilb07.
It's a weekend so it is unlikely that you will receive any reply today or tomorrow. After that, I guess you'll have to be patient, as the good folk there are always very busy.
BUt, perhaps you actually do have the key!

If you go to the case that holds your copy of Ship Simulator 2006, it should have the booklet on the inside. Underneath the booklet should be the sticker with the number you need. That label is very firmly attached and is unlikely to have come unstuck. So perhaps you just haven't pulled out the booklet to see it?
Have a good weekend.