De ss64 :
"NET USE command can map a network printer to an LPT port (for DOS type applications that print to a port.) but this does not add the printer to the Control Panel GUI."
Se você estiver limitado a usar cmd, convém usar Rundll32 printui.dll, PrintUIEntry .
Se você pode usar o PowerShell, pode fazer algo assim:
$prnt = [wmiclass]"Win32_Printer"
$prnt.AddPrinterConnection("\PrintServer\PrintShare")