Apparently, my new security package thinks AutoCAD 2004 is a threat. I started 'allowing' the threats and finally can get into my application. I am receiving error messages and I also discovered a service pack that can be downloaded to update my application.
However, I do not have the discs to assist in the repair of my application OR in the downloading of the service packs. I don't know if my application is 'locked' or 'unlocked'. I'm afraid to start the service pack download in the event what little I have to use will be totally lost. And I am very poor--I cannot afford another application.