I have a desktop PC with Arch Linux 2013.08.01. I also have an old HP Pavillion DM1 netbook. I'd like to configure the netbook so it is simply a "terminal" of the desktop PC over the network. I'd like to see the desktop PC from the netbook, and do all my work over the netbook when I'm away from the PC.
Basically, just like a remote desktop environment. But I really need it to be fast, and efficient. Could you suggest a lightweight and open source configuration that will work quickly and effectively for this purpose (given a good network connection) ?