How to create an appointment without having the creating account being an attendee?

Is there any way to create an appointment without including the creator
of the appointment in the appointment? For example, if I use the
following code to create an appointment for someone else, it always
includes me in the attendees. I have tried a few things so far without
any luck.

Thanks!

Sub Go()
' Create an Outlook application.
Dim oApp As Application = New Application

' Get NameSpace and Logon.
Dim oNS As [NameSpace] = oApp.GetNamespace("mapi")
oNS.Logon("", "", False, True)

' Create a new AppointmentItem.
Dim oAppt As AppointmentItem =
oApp.CreateItem(OlItemType.olAppointmentItem)

' Set some common properties.
oAppt.Subject = Me.txtSubject.Text
oAppt.Body = Me.txtBody.Text
oAppt.Location = Me.txtLocation.Text
oAppt.RequiredAttendees = Me.txtRequired.Text

oAppt.Start = calStart.Value
oAppt.End = calEnd.Value

oAppt.ReminderSet = True
oAppt.ReminderMinutesBeforeStart = 5
oAppt.BusyStatus = OlBusyStatus.olBusy ' olBusy
oAppt.IsOnlineMeeting = False

oAppt.ResponseRequested = False
oAppt.OptionalAttendees = Me.txtOptional.text

' Save to Calendar.
oAppt.Save()

' Logoff.
oNS.Logoff()

' Clean up.
oApp = Nothing
oNS = Nothing
oAppt = Nothing
End Sub