Finally done it

Well I've finally upgraded my old power powerbook G4.
Walked into the apple store and got a lovely macbook 2.4
I went for the 2.4 because of the bigger HD and the backlit keyboard (stupid I know... I love the looks, speed and trackpad which has changed the way I do things dramatically.
Question is, does anyone know if enabling the password on the screensaver turns off wifi or any other services when the screen saver kicks in? Would really be useful to know.

Thanks.