How to retain free software received

I receive daily email telling me a free software given by Giveaway of the Day. You can click here to go to the site.

Well, you must install the software offered within 24 hours. The snag is if your Windows hangs and you want reinstall the free software, you have to pay to get it running. Now I have thought of a way to retain the software.

All I do is to backup my C drive using Norton Ghost and recover it using Norton Recovery Disk and my backup file when Windows hang.