Over the years we repatedly received emails from clients who lost all their data (including CombiWave) due to harddrive errors or stolen laptops.
While we can resend your CombiWave product key we can't help you restoring lost data. To backup your data we recommend Acronis® True Image Home 2011:
Acronis® True Image Home 2011 provides home users with reliable backup and disaster recovery of systems, applications, settings and personal files. You can easily define where, locally or online, and how often to backup a PC. Create copies of your hard drive with just a few quick steps while continuing to work.