"The software update will be installed automatically, or will prompt you to download or install it, depending on which operating system you are running and your settings for Windows Update. If you do not have automatic updating enabled, you can get the choice screen by going to Windows Update and clicking on 'Check for Updates.'"
Via the ballot, users will be presented with three options: "Install" to install one of the listed browsers; "Tell Me More" to get more information on the various browsers (with links and logos provided by each vendor); and "Select Later" to postpone having to make a default browser selection.
Microsoft originally fought hard against the browser ballot — to the point where the company almost went so far as to create a whole new Windows 7 SKU (Windows 7E) that wouldn’t provide a way for users to get on the Internet and choose a browser. In the end, the Softies decided to settle rather than fight, and the soon-to-be-implemented browser ballot is the result.