Super Newbie trying to stream external video to FMS

Okay, I'm totally new and in the absolute dark here.  I have installed FMS on a server in the TV station in which I work.  I am trying to figure out how to stream video from Adobe Flash Media Live Encoder on an outside computer, back into the FMS at our station.  I have no idea what the FMS URL is that I need to plug in to the Flash Media Live Encoder in order to reach the FMS back at our station.

Do I need to have something housed on an ftp site?  We have a website and I can put whatever I need to there if that is indeed what I need to do.  Not sure what the heck I'm doing here, but I'd LOVE to figure it out.  I know it's not a lot to go on, buty any help would be greatly appreciated.

Thanks