go to "Tools" then "Setup Wizard", go through the menus, choose "DBC Online Subserver", then rest should take care of itself
once you see symbols in the Global Server screen, you have to highlight the ones you want live feed for, then go to "Edit" then "Connect Symbol" - it takes a minute to connect and start getting data
sometimes it seems to take much longer (ie. a couple of hours, before the data is accessible