You CAN use your game ya bought to install on your server machine and install the NoCDCrack from
www.gamecopyworld.com so it doesnt need the cd. Then install the NoCDCrack on your home machime so ya dont have to use it there either.
I am doing it this way and its fine, you can start your dedicated server from a command line also. Same as the demo. Not sure on the rcon issue though