Yes, it's called Remote Desktop. A Google search should be able to give some more information.
DG
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Please let us know how it works for you. I tried this a couple of times. Even bought Remote Desktop. I can never get this to work without it being painfuly slow and quite un useable.
Perhaps because on the master Mac I am using Leopard and on the slave Snow Leopard.
I gave this a really good try and just gave up in the end. And yet I hear of others using it with success. Got me beat.
So please let us know how it works for you.