Nikon P7700 and CLS?
I have only used the SB 800 & SB 600 with the P 7700 remotely. Turn the camera on, then push the top of the rotary selector (the lightning flash) and this will give you a sub menu. Raise your flash unit and then you want to scroll down the menu to the bottom to "CMD" which is the Commander mode. Hit OK.
With the SB 800 you need the flash set to remote "A- 3" for the remote flash to work. Note that with the little Nikon IR trigger you can also remotely trigger the camera so you can have the camera on a tripod or table and hold the flash where you want the light. It works pretty well.
It is a fun little camera.