Unfortunately, I can't get past the initial registration process of the installation, as I do not have the product serial number. According to the user's manual, this came with the original PP installation CD.

I've attempted to confuse it by using another serial number from a Corel installation disc, however it does not accept it. I even tried the basics by putting in "0," or nothing at all. No success. The previous owner didn't record the CD serial number in the manual, in case anyone asks.