Is this a SOCKET resource or an INSTR (VXI-11) resource? If SOCKET, then you'll need to assign it an alias for it to show up in the LabVIEW drop-down list.
We do recognize this as an inconvenience, by the way - logically it should show up in the LabVIEW I/O control if you've set the I/O class to "TCP/IP Socket", even if it doesn't have an alias - but it doesn't work that way yet. So we'll try to address that in a future version of LabVIEW.
But for now, just assigning it an alias will make it show up in that list.
Dan Mondrik
National Instruments