I have a 1900 switch that connects my PDC and database server along with CAD stations and a Cisco 2620 router, then goes to a hub for the rest of the network. I have added a 2nd NIC to my PDC attached to a Cisco 827 ADSL router for internet access. the PDC can access the internet but none of my other clients or the database server can see it. They can see the 2nd NIC but not the router and I was wondering if there is something with the switch that may cause this condition.