Do you have an updated version of this software?
No, there is no updated version of this software and neither it will be. The main reason for this issue is that the developer is out of business. I've checked the official website and it leads to a generic page shown when the domain expired. I recommend you choose something else because this won't be available in the near future.
You can choose other applications from the following list: http://software.informer.com/search/estate+seller