>Wish I knew more about FoxPro so that my answers may be a bit more enlighting. Check out Microsoft KB article Q105997. it defines the differences admirably enough (the key point being at the part about not on the local subnet).

Thanks for the link. It looks like I really want to use the Hosts file in this case.

All of the connections are using not routable IPs like 10.0.0.1. We are using these IPs to setup back end file sharing between three web servers. I can ping to all of the Hosts without a problem. But if I try to map a drive in the windows explorer or if I try to access a file using UNC, it doesn't recognize these host names. I can only access the files using the IPs.

Am I going about this the wrong way?