You are free to modify any codes inside sample program. However, it would be best to take look at "Private Sub Pal1_notify_status (ByVal user As String, ByVal talkerID As Integer) Handles Pal1.notify_status" function, because regardless what kind of program you are going to write, you are going to have an event handling function like this one to receive event from PAL. In the sample program, it has already defined what the messages will be like and what is the meaning of the message.
Modify the Code
You are free to modify any codes inside sample program. However, it would be best to take look at "Private Sub Pal1_notify_status (ByVal user As String, ByVal talkerID As Integer) Handles Pal1.notify_status" function, because regardless what kind of program you are going to write, you are going to have an event handling function like this one to receive event from PAL. In the sample program, it has already defined what the messages will be like and what is the meaning of the message.