Is it possible to set up NETGEAR wireless router without a modem?

I use cabled internet connection. I have only one internet cable. I plug in to my laptop, write the MAC address of the internet, open the log-in page of the internet service, write down the username and password and then I surf the internet. The question is how can I set up my wireless router?

I tried it but there was no internet access. I know the password of my wireless router's password but when it connects it says 'No Internet Access'. So I went to my laptop's wireless port advanced settings and wrote down the MAC address in the Network Address tab. Still no connection.

So I am asking, what can I do in such situation like this? Do I need a modem to do this or the MAC address/log-in page is causing problem. I need answers ASAP, thank you.

sorry can you be more specific about it. this is the first time I set up a wireless router and have no experience what so ever.

the problem is that I can't go to the 192.168.1.1 address

Ok I got the gateway address now what? Also where do I plug in the cable? In the internet port or the LAN 1/2/3... port on the router?

the problem is that I have only 1 cable. No modems nor ethernet cables at all.