Ubuntu Servers :: Assign The Static IP Address Of Internet Connection

I was trying to assign the static IP address of my internet connection to my home server and managed to make a mess of it. I've configured the router to assign it the address every time but when I rebooted everything the server is cut off from the network completely (rather unfortunate with a headless server...). The only file I've edited on the server when trying to do this is /etc/network/interfaces, everything else network related is default. My intention in editing the file was to make the server accept the IP address assigned by the router since the router was already configured to assign the right one. I put in

Code: inet dhcp in the /etc/network/interfaces file, is that wrong? What is that line supposed to be?