CLS works only with Nikon CLS compatible Cameras, which is F6 (film) and most Nikon digital bodies. Anyway there is a way to use the flashes with your RB67:
Use the SB 600 in manual mode as the master flash, connected to the camera (you might require an adapter to connect it to the camera pc connector)
Use the SB 800 as the remote configured as SU-4 type. The SB 800 can work either in Manual or non-TTL Auto mode.