can not connect to the internet with my realtek 11n usb wireless adapter

i installed the usb adapter softwear on my desk top and it shows all the wifi in the area when bought up, it connects to my router i am using right now with my laptop and shows it is connected and every thing is alrignt but i can not bring up any web pages with internet explorer, even google will not come up, any suggestions. keep in mind i am a complete tech noob and computer illiterate.

thanks

rick