I have been using dial up for my internet connection for the past 6 months on Windows. Before that, I used DSL. Now, I am trying to switch back to DSL but I can't connect to internet on my Windows.

there is no problem, I am sure, on the DSL connection, since I have dual-boot Linux installed and DSL works fine on there.

Besides, everything looks fine on Windows, such as the Network connections and the internet connection notification icon and so on; it shows the computer is connected to high speed internet, but when I open the browser, it just can't find the web. Neither do the applications such as putty.

Any idea? is there some settings I need to change since I switched from dial up to DSL?

thanks