Click the "Allow" button, and the following should appear:
Click on the "Install Now", and you should eventually see the following screen:
Click the "Restart Firefox" button, which will complete the installation. When Firefox reloads, you will see a confirmation screen that shows where the extension is installed:

Close the window, and in the bar at the bottom of the browser, you should see the following addition:

Bring your mouse into the region of this new window, and right click your mouse (control-click on Mac), which should load a popup menu:
Select the "Options" menu item, which should bring up the following window:

Enter your Capital One user name and password, and you should be ready to go. With a valid username and password, you should see the following appear in the bottom of the browser:

This display will minimize after a couple of seconds, but a summary of your balance information can be seen if you move your mouse over the small credit card icon:
