If you are wondering if you are able to use your existing modem that you use for dial up internet to connect to broadband with then the answer is no.
If you have standard broadband ADSL then a special broadband modem/router is required, if you have cable then a cable modem will be required, and if you have wireless broadband then a wireless modem/router will be required.

The difference between a standard dial up modem and a broadband modem is that unlike a dialup modem a broadband modem is able to modulate and demodulate hundreds of channels at the same time though it which makes it so much quicker, unlike a standard dialup modem that isn't capable of these hundreds of transmissions.