you can connect your modem to the TV with an ethernet cable.
Run the setup option from your TV's internet menu.
If you use a router make sure there are no ip conflicts with ur computer and the tv.
You should be good to go.
If you want to access via wifi use a samsung wifi usb dongle.
Youtube,dailymotion,twitter,facebook,google maps,accuweather,AP news all work fine here.
Connect the BSNL first to your computer. Then disconnect the cable from computer and connect it to the TV. It should work. I use the cable to connect net as usb dongle is little expensive.
Any idea when skype is available in samsung widgets??
check if your tv is getting an ip.. ideally if you connect it you should get an IP as nmodem is set to DHCP.. is still no go.. try assigning IP address..
if you gettin an IP you are all set..
any network.. initial setup is the IP address and rest follows..