Use network computer as secondary monitor ?

[paranormal]

I have an old netbook (with a busted battery) which I want to use as a secondary screen (dual monitor setup) with my primary Desktop computer over the LAN. I'm looking for a way in which my virtual work space on the Desktop would be displayed on this netbook.

I've tried my luck with Google but haven't found the solution. I think that it can be done (an assumption loosely based on the awesomeness of Linux and some discussions I read).

Both my machines run on Debain based distros. The Desktop is connected to the network over a CAT5 cable and laptop by WiFi.

Thank you for reading. Suggestions and help is appreciated.

[arespi]

Check out Synergy, it might be what you are looking for:
Synergy

[paranormal]

Synergy is different ... it would just help me share the keyboard and mouse with different machines over the network .... both the machines will run independently. What I want to do is be able to use the secondary screen (in my case the netbook) as a 2nd monitor to my desktop such that the 2nd work space of my desktop is displayed on it (so that i can transfer windows from one screen to another).

What I want to setup is close to doing a screen share from my desktop to netbook with only a particular work space and that work space should be visible even when it is not the active workspace.(Very much like using a dual monitor setup through the graphic card). But Im searching for a way to do so over the network.