How to set up an ideal network for your sim
Utilities
WideFS:
website: http://www.schiratti.com/dowson.html
This is used to have external programs made for FS, linked via FSUIPC, work on an other computer than the one which runs FlightSimulator. The big advantage is that if that external program is heavy on the CPU, this way you will not lose any framerate!
website: http://www.wideview.it
This is used to have multiple computers showing outside views. It allows to link 2 FS softwares running on separate computers over a network.
FlightSim Manager:
website: http://www.ranainside.com/software_flightsim_manager.html
This Sim manager seems to allow same things as WideView + support on FS9 for gauges. At first sight it seems very tweakable to get affordable performance.
Synergy:
website: http://synergy2.sourceforge.net/
This software should allow you to use 1 keyboard and 1 mouse for all your computers. Something like a KVM switch but than via networked software. Let us know if it works !
VNC:
website: http://www.realvnc.com/
This should be similar to Synergy ?
Basic Network Setup
Using a Switch:
Using CrossCable: