Ubuntu Synaptic Without CD

Sometimes when using Ubuntu "Synaptic Package Manager" or the command line "apt-get" to install a certain application, they ask you to insert the Ubunut CD in order to continue. So, in order to let them search online and skip looking in the cdrom you can go to "/etc/apt/sources.list" and comment the following line "deb cdrom: ...etc." to look like this "#deb cdrom: ...etc." Tags: Ubuntu, Debian, Gr33n Data