"How do I make a backup of my personal threads?"
To make a backup of a single thread database, use Export Threads to Embroidery in mySewnet™ Thread Cache.
To backup all of your thread databases for moving to a new computer, use Backup MySettings in mySewnet™ Configure and save them to a USB stick or other backup medium. Place the USB stick in your new computer, open mySewnet™ Configure, and run Restore MySettings.