Lost Internet by setting up home network

My internet connection (Cable Broadband) was working fine. In the midst of
using it a window popped open asking me to set up my Network choices - Home
and a couple of other choices. Without thinking I selected Home Network...
The internet was working fine at that point. And later i shut down the system.
Next day when I restarted the system, I was unable to connect to Internet
through my user login. However the internet is working fine in other logins.
I checked the network sharing and it showed 2 networks...1. Network - Not in
use and 2. Network2 - In use
I tried reselecting options within Network 2 - Home, Work, Public to no
avail. Then I removed that network.
How do I enable my login to access internet now?