77.SOLUTION : Configuring a Modem in Linux is pretty much the same as it is in Windows. All you need to know is which port it is installed on. A point to note is that COM1 in Windows is ttyS0 in Linux, COM2 in Linux is ttyS1, and so on. Once you figure this out, you should symlink this device to /dev/modem,so as to avoid confusion later on. Use the command ln -s /dev/ttyS0/dev/modem . Now you could use any one of the diallers that are available in Linux. One of the best utilities is Kppp, which is very easy to configure wvdial, you need to use the command wvdialconf/etc/wvdial.conf. You have a hostof configuration options for wvdial. You should see the mand pages for wvdial for more information. Also note that if your are using utilities like wvdial you will have to set the DNS server to that of your ISP. This can be done using netconf. This can be avoided if you are using Kppp, as it has the option of accepting your ISP's DNS server i its configuration, with your current DNS server being disabled.