Ensure you have a good spot in your files for your latest Quickbooks disks and login details, registration, etc.
It is not possible to just copy the software from your computer as the installation installs parts of the software in different areas, not just in the programme folder under programmes. So best to keep disks safe, but if disaster happens, call your local country office and they will be able to help with a link to get a download
Downloads of recent versions are available from the websites:
If you have Advantage cover you will have a log-in to access other benefits, so call and find out what you are entitled to.
Aust 1300 784 253
USA (888) 859-4056