sober_pollock

Thanks guys.....That's exactly what I plan on trying.....I just feel like I'm missing some thing..... pollock

No.....No DHCP.....Everything will have an asigned address.....One network will have a DSL modem and several more computers on it. Those computers will be only on one of the two networks and it is the network that I do not want to be able to share files on. I'm just going to try it because I think it will be as simple as disabling "File And Printer Sharing" in the properties of one network and enabling it in the other. But I'm not sure..... OH.....And I couldn't really see what this had to do with subnetting either.....But I now know where to find lots of calculators I don't need pollock

I have searched at length for this in several places, no luck….. I have several computers that have two separate Ethernet controllers ( In other words, each computer can connect to two different networks.) What I would like to do is set up two completely separate parallel networks using two hubs. It would go like this: Computer #1-----Ethernet A-192.168.1.X-----Ethernet B-192.168.2.X Computer #2-----Ethernet A-192.168.1.X-----Ethernet B-192.168.2.X Computer #3-----Ethernet A-192.168.1.X-----Ethernet B-192.168.2.X One hub for the 192.168.1.X network and another hub for the 192.168.2.X network. Each computer would be on both networks. Finally, I want to share files on one network but not the other. Does anyone know if either Windows Vista or Windows XP is capable of sharing files and printers on one network but not the other? Thanks for any thoughts on this or if you could suggest the right Google search phrase! pollock