I have a feeling that the PrintServer.GetPrintQueues method does not return the network printers.
If this one is true, what other choices do i have?
After a lot of Googling the GetPrintQueues method do return the network printers too with aid of EnumeratedPrintQueueTypes()
Private enumerationFlags As EnumeratedPrintQueueTypes() = {EnumeratedPrintQueueTypes.Local, EnumeratedPrintQueueTypes.Connections}
More information can be found here