One additional point to add to what @galfert provided. If you are using an FTP scripting program (WinSCP for example) the string becomes:
"open ftp://[yourcameraID(CAM1, CAM2, etc....]:[yourcameraKEY(the newly created Key Code)]@webcam.underground.com" where both the ID and Key are case sensitive.
So far, my success rate is about 95% using the DNS "webcam.underground.com". My images will show up within 15-20 minutes of delivery, or sometimes be within 30 seconds, just the luck of the draw I guess. Using the DNS rather than a static IP seems adequate since you never know when Brutus will poop in server room.
YMMV