PLEASE HELP!!!! NORTON REMOVED MY BUSINESS!

I have looked everywhere on the discussion board and cannot find anything related to what I am looking for.  I have a PC with Norton Anti Virus 2011 installed.  This morning after scanning my computer Norton asked if I wanted to download "intrusion prevention and insight protection," I chose to download it. The program then said that my computer had a "BAD" file and asked if I wanted to fix it.  I said yes.  The program then asked me to reboot my computer.  After logging turning my computer back on I found that the program that holds all of the data for my husbands business is gone! I called the programmer and designer of the program and he said that I would need to contact Norton.  I am freaking out! Please help!  Anyone at all???