We are thinking of getting a broadband connection and chances are we will choose BSNL.I spoke to the BSNL call centre they said I HAVE to buy a modem from them. The web site gives the option of not having to buy a modem. I am confused. I have a D-Link ADSL modem. Can I use it with BSNL's broadband service.How is the overall service from BSNL?