cdtaylor_nats
also, the point is that (apart from avoiding flaky ICS type setups), you don't need to have the "host" PC running for others to connect wirelessly to the net. Also, just be a bit careful if the only machine running a (presumably) software firewall is the host PC as this will not protect you from al evil. Run something like Zonealarm pro on ALL machines.
Cheers,
O