Grisel,
The ability to browse FieldPoint ethernet network modules is based off of UDP and is restricted to computers on the same subnet. You can not browse across subnets. However, as long as you know the IP address of the module, you can link to the module directly and still communicate with it. If you want to talk to the I/O modules and configure I/O, when you create the Comm Resource, type in the IP address and press Find Devices and it will list all the modules just as if you had first browsed to the module. If you want to reconfigure the network module, there is a menu option in Remote System Explorer that allows you to link to a specific module (type in IP address) rather than browsing the local subnet.
Regards,
Aaron
LabVIEW Champion, CLA, CPI