You probably can but (there might be some issues) it sounds to me like you have 2 active firewalls & that's causing the issue. 2 firewalls can interfere with each other. Choose one & disable the other. eg: If you have XP firewall & another, then disable XP's firewall (go to the control panel, double click on Windoze Firewall, check the disable box), & configure your other firewall to allow access thru the port you're using & with BS & I'm sure the colour will change.
It's easiest to downld files from those that have multiple hosts.