I am using ICS on my download PC & gaming rig. No switch involved. The download PC is in third floor & has two LAN cards (Onboard gigabit + 10/100 PCI LAN). Gaming PC is in my room on the second floor... MODEM is connected to the PCI Lan Card & onboard gigabit LAN is connected to my gaming PC's gigabit LAN (Onboard) using a CAT6 Crossover Cable. The gaming rig is headless so no monitor, keyboard or mouse. I use UltraVNC to control it over the network using my gaming rig...
Its not very complicated but may be for someone who tries it for the first time. By the way I am using WinXP on my download rig & Win7 Ultimate on my gaming rig.. :hap2:
Using a switch is the simplest & cheapest way around though... You don't need both PC's running at the same time & each PC can access Internet separately, together or singularly..
In my case my download rig should be running in order for my gaming PC to access the internet... Its no problem since my download rig is on 24x7...
It sure is the cheapest way forward....