In a web browser on your new computer, visit our Downloads page. Download and run our software. You will be prompted for the email address associated with your account and your password, and asked if you are adding a new device or reinstalling an existing device. Choose the former, giving it a new, unique name. You will then go through syndication to set up this new device with our servers. No files from your other devices will be downloaded or synced to the new computer during syndication.
Once syndication completes, set up your new device as desired. Begin in the Backup tab by selecting the files and folders you wish to back up and press Save. And you will be on your way!