Exchanging bsnl modem with a wireless modem?

-I own a bsnl modem which i want to exchange with a wireless wifi modem. Can I do that?..

If I can't exhange, where can I find buyers for the older modem?..i don't think you can find any dealers who can buy ur old modem...



but u can get any router(like the linksys or d-link) anything...for around 1200 which is much cheaper than buying a wifi-modem from bsnl....you can connect this router to the modem and it just works fine....