You want to connect one laptop to the screen of another? The HP laptop will need to have a video in port, but as it is a netbook, it is very likely it won't. They aren't common even on full size laptops. What you can do is connect the laptop to a TV or a monitor. You will need a DVI or a VGA cable, it depends what type of port is on the laptop. If you still want to access it from the netbook, you can set up Remote Desktop while connected in the TV/monitor, and then use it headless later. However, this will only be suitable for activities involving static pictures, so no videos or games.