Ah sry Svon. [:D]
Check a thread further down in the topic list called "Nick Batzdorf and Vagn - RE: 2 Macs" where we are having a discussion on this very subject.
And fyi, I have a samsung TFT display which have both analog and DVI input, so I connect both Macs to it and switch between them by pressing the "source" button on the front of the display. This will switch between the inputs, and alas, the 2 Mac desktops. Handy.
I have seperate Keyboard+mouse beside my main one.
And yes, use Tiger's built in midi over network functions if u are going to use Macs only for the setup.