Hello;
To have a RDA process running, you need first to start the RDA server at the machine that has the hardware (go to Start->Programs->National Instruments->NI-DAQ->Remote Device Access Server). Then, create the virtual channels you want to monitor remotely.
At the remote machine, go to MAX, right click at Devices and Interfaces, select create new, and select the RDA/Ethernet Device. After you configure the IP address to be the address of the remote machine, you should be able to access all the remote virtual channels.
Hope this helps.
Filipe