FWIW, I've got something similar which would work, and depending on IRQs, etc, doesn't even need separate hardware profiles. My docking station has two PCCard slots, in addition to those in the laptop. Hence the station has a NIC, bound to one IP on the office lan, and the NIC used in the laptop alone has another IP for the home lan. Costs more, but works. You could probably use two different NICs in the same slot of the laptop, if Windows could easily (Plug-n-Pray) distinguish the two on bootup. Good Luck