I have got one adsl internet connection which is 2 Meg and another one for backup which is 512kbps (not the adsl). I would like to bind these two together to get the maximum output. So can anyone tell me how to do that? What equipment do i need to make it work?
You can't connect two modems to a broadband connection and use them at the same time.
Anyway your speed is determined by what you pay for and what comes through the outside wall. You want faster then you will have to upgrade to a faster speed.
If you have a low speed by virtual of the distance you are from the exchange and a crap telephone network where you live, then there is no way you can change that except by moving house.