Ahh ok. After you install it, you have it pinned to the top of chrome. That way you can easily see it and access it. What you want to do is click it, then 'accounts | add account'. Choose "use keys/pwd". Enter your user name and paste in your active key (for moving coins). Later you can also add your posting key for normal interactions, like posting, replying etc. Once you add those keys, then you can use it to log in.