iBook Computers

I want to output an ibook g4's display (preferably through firewire or network) onto the screen of another computer (old powermac g4). The reasons for doing this is:
that the other computer has a large screen on it (21" which is quite a bit bigger then the 12" on the ibook).
The powermac is quite a bit slower than the ibook so i am not going to use that instead.
I dont want to buy the adapter for the ibook that goes straight to vga.
But if another workaround from going straight from the laptop to the 21" would be even better than what i am trying to achieve.

I dont want to do anything fancy like dual displaying or anything.

Specs:
iBook G4 1.2ghz
12" display

Powermac specs
400mhz, graphite
(its rather common so everyone who has an idea about macs should know which one i am talking about)
the monitor is a dell 21 inch CRT

Thanks

Remember the saying "Use the right tool for the right job"?

Buying the adapter is the easiest solution by far.

However… if the machines are connected on a network, you could use a remote desktop management solution as a workaround. Download and run "OSXvnc" (a.k.a. Vine Server) on the iBook and view the iBook's screen on the PowerMac by connecting to the OSXvnc server with a program called "Chicken of the VNC" or "JollysFastVNC"

Keep in mind, this solution will have ridiculously slower response time than just going out and purchasing a $5 adapter.

OSXvnc:
http://sourceforge.net/projects/osxvnc/

Chicken of the VNC:
http://www.apple.com/downloads/macosx/networking_security/chickenofthevnc.html

JollysFastVNC:
http://www.apple.com/downloads/macosx/networking_security/jollysfastvnc.html