Some caveats to consider:
- You will not be able to use multiboxing software (due to transmission lag) unless the units are all connected to the same router/hub. (For the nit-pickers, yes I know there are some caveats to this caveat but the basic idea still stands. GTFO.)
- Hardware options are expensive and reliable (Vetra, etc.) or cheap and may not work great (wireless keyboards/mice) depending on conditions at your desk and distance between the two PCs/keyboards/etc.
- Software multiboxing apps like ISBoxer/HKN/etc. do not allow "KVM" style control of your second PC, with the exception of Mojo and Octopus as far as I know. You will need something like Input Director (the best option) or Synergy (has issues with mouselook) or Multiplicity (has issues with mouse capture preventing broadcast from the second PC back to the first PC in FTL setups) if you want to be able to mouse over to the second PC and control it.
Tell us what your budget is and your current home network setup and we can help with details.
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