iMac OS X 10.5.8 screen as monitor for Mac Book Pro

[RosieB]

I am very untechnical so much of what I have read on this matter is above my head, but in simple language, if I buy a new MAc Book Pro is there any way that I can use the 21" screen on my 2005 iMAc OS X as a monitor? I asked someone at Apple Store and was told that though later models were fully compatible, for one that old I would need special software, but he couldn't say what. An earlier thread posted last year that I didn't fully understand suggests that I don't need software. Any help would be much appreciated as I shall miss my lovely big screen, but the computer itself is beginning to go slow with old age.
Thanks, RosieB

 

[old-wiz]

There's software, but you have to know how to set it up. You can't simply connect it like an external monitor. IIRC, google screen recycler or some such.

 

[RosieB]

Do you know where I can find out?

Thank you so much. I did as you suggested and found a product with high scores from reviewers but no information about how to set it up. DO you know where I can find this? My far-more-technical-son is coming over in a few days time and could probably do it for me if he knew what to do!
Rosie

 

[RosieB]

Me again

Sorry- I found what I needed on the site, http://www.screenrecycler.com/ScreenRecycler.html
and I am looking forward to trying it out. I really ppreciate your help,
RosieB