Hi,
Sorry to hear about the trouble you are having. There are a couple of options for getting the product key.
You can try contacting Tech Support for Pinnacle and see if they can provide it to you directly. Click
here for the contact page. I recommend you try this before anything.
Another option you have is to try and find a product key or a "crack" program online. A crack program will basically bypass the product registration. You can possibly find a crack program or even a product key through torrent websites like
PirateBay. Be warned,
in some cases this is considered illegal and if you are not careful you can get a virus. If you use PirateBay, be sure to read other peoples comments to make sure what you are downloading is legit.
Let me know if you have any questions.
Regards,
G33k