@FurryNutz and @GreenBay42
Thanks for the invaluable suggestions.I would definitely follow them.
What got me interested was that after flashing my 2750 with ME_1.16 , it started working for almost a day and would have continued had I not tuned it off
and switched it on the next day.I had contacted Dlink India support but they said its not supported ( they couldnt explain how it worked initially ).My ISP has said they cant bother themselves with what is going on with my router as they are able to get me connected directly with my PC/Laptop.
I guess I will have to either get a cable broadband only router ( not in a hurry though
) or use ICS as a temporary workaround.
Again guys ! Thanks for your support till now