You can download your videos here: http://www.killervideostore.com/user-login.php
... Just use your email address to log in.
Once you've downloaded the videos, you can burn them to your own DVD or save them on a backup drive.
The videos are packaged in zip files. If you have Windows 7 or above, you just need to double-click on each zip file to unpack the videos from the zip containers.
If you have Windows XP, you may need to download the FREE zip program:
Do NOT buy the commercial versions of these programs. Use the free versions.
If you have any problems running the videos, you may need to download the free Quicktime video player: http://www.apple.com/quicktime/download/