Nova for Windows has several methods for updating Keplerian elements.  The method that you choose depends on how you acquire new elements, whether you are connected to the internet, and whether you need to update automatically.

The list below is arranged from easiest at the top to most difficult at the bottom

• HTTP/FTP download (built in to Nova for Windows)
• Automatic update from e-mail
• Acquire a Keplerian element file and update Nova
  • Drag-and-drop the file
  • Reading the file
• Manual editing each satellite's elements