Old MacBook as New MacBook monitor

[studiotrujillo]

Howdy-
I recently got the new MacBook Pro 15 running the latest OS.
I still have my older MacBook and it's so old, '09 running 10.6. and she still has some life left in her.
I know they can be connected- but for the life of my I can't seem to find out how I can use the old one as an extra monitor! I am in Spain and it is a little tricky to get help over here and couldn't find anything on Google. Anyone that can help with this would be incredible.
I have a thunderbolt cable- went from mini-vid to thunderbolt on the new. Nothing.
Thank you!
-ST

 

[JTToft]

Can't be done, sorry. The Mini DisplayPort on the old 2009 will only output video, not accept incoming video.

 

[robvas]

You can do it with software like AirDisplay or Screen Recycler

But a monitor is like $100...

 

[jerryk]

You can do it with software like AirDisplay or Screen Recycler

But a monitor is like $100...

Definitely. I bought a 24" Asus monitor that directly supports HDMI, DVI, and VGA for under $100.