How to resolve NIC service IDs (GUIDs)?
Solution 1:
If you mean the actual GUID that the machine has assigned to your nics, use netsh from the cmd line (you may need to start the Wired AutoConfig and/or WLAN AutoConfig services first).
For wired NICs:
netsh lan show interfaces
And for wireless NICs:
netsh wlan show interfaces
The output will include the GUIDs of each network interface.