TomatoUSB

I have put tomato version 1.28 (tomato-NDUSB-1.28.7624-ND-Std-NOCAT ) on my asus 520gu router. I can connect to the internet through ethernet cable. I can also connect to the router through wi-fi but it says there is no internet access.
Can anyone tell me what settings I might need to change.
Anything in Advanced Wireless I need to change, like transmit power?

I am using windows 7, I have WPA Personal and using AES for the password. And I have a cable modem.
Thanks