KInternet - How can I stay connected?

I have a DSL connection which works fine. My question is, how can I make the connection stay alive even when I log out/ in to my account? (or another account e.g root) And will the connection stay alive even when no user is logged into my machine? (@ the login screen). I also want to disable the timeout option when no internet activity has been detected for a while, where can I disable that? Why am I asking? I want to set up an apache web server and I want it to be up all the time even when no one's using the computer It doesn't have to be KInternet anything else is welcome as long as it gets the job done. Cheers, Mike