Hi,
i keep surfing the internet everyday.but, i would like to clearly know how the internet works exactly,what protocols are used for what purpose,how the data first goes to an ISP and then to gateway and so on and also in which form the data is transfered(analog or digital).and also what exactly does a modem do.if anybody can give me a technically clear idea about all this it would be very much helpful to me.
thanks.

i dont think this is the right forum to ask such basic questions

Gautam,
    May be you dont know the answer yourself...always try and help and never discourage anyone. That is a hallmark of a mature developer.

Priya,
   I think a very good explanation is given in this URL.
http://rus1.home.mindspring.com/whitepapers/internet_whitepaper.html

Hope that helps..
Have fun.
-Navin

Thanks Navin.
Regards,
Priya.