accessing the gui interface

hi - have a nwa 1121-ni.  Want to use it as a WAP on an existing network connecting directly to my main router then set up a guest account on the 1120 as my router does not have that option.
Run into several problems where I need advice.
Firstly cannot access the web configurator via a direct cable link to a laptop.   Laptop has same subnet (192.168.1..... dynamic not a static address) and wifi off but when I put 192.168.1.2 into browser it cannot locate Also cannot ping the address.  however when I connect to t Zyxel via WiFi and put in the same address I get access to the configurator - any ideas ??
Secondly tried to set up following the manual - problem is my screens are not the same as the ones in the 1121-NI manual downloaded from Zyxel site,   For example on mine under security I have no options to hide or make the SSID visible no prevent inter device contact (no tick boxes appear as in the manual) This makes it difficult to set up a guest option.
Thirdly I set up 2 SSID's under MBSSID mode - all looked ok on dashboard but neither appeared as available WiFi options - only the original Zyxel wifi option was present .
As you will see I am an amateur so any help would be most welcome
thanks