Adding A Button To The Switchboard Should Be Easy, Right?

Hi! Everyone on this forum has been very helpful so far, and I could really use some expertise now. I'm trying to update an existing DB designed by someone else (no longer here). I need to add a button to the switchboard for 2006, but I don't understand the code that has been written for the form I am trying to update. I've posted the code below. If anyone can help me decipher it enough to add my button, I would really appreciate it. My new button should be the 9th one. Thanks in advance:

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Option Compare Database
Option Explicit

Private Sub Form_Open(Cancel As Integer)
' Minimize the database window and initialize the form.

' Move to the switchboard page that is marked as the default.
Me.Filter = "[ItemNumber] = 0 AND [Argument] = 'Default' "
Me.FilterOn = True

End Sub

Private Sub Form_Current()
' Update the caption and fill in the list of options.

Me.Caption = Nz(Me![ItemText], "")
FillOptions

End Sub

Private Sub FillOptions()
' Fill in the options for this switchboard page.

' The number of buttons on the form.
Const conNumButtons = 9

Dim dbs As Database
Dim rst As Recordset
Dim strSQL As String
Dim intOption As Integer

' Set the focus to the first button on the form,
' and then hide all of the buttons on the form
' but the first. You can't hide the field with the focus.
Me![Option1].SetFocus
For intOption = 2 To conNumButtons
Me("Option" & intOption).Visible = False
Me("OptionLabel" & intOption).Visible = False
Next intOption

' Open the table of Switchboard Items, and find
' the first item for this Switchboard Page.
Set dbs = CurrentDb()
strSQL = "SELECT * FROM [Switchboard Items]"
strSQL = strSQL & " WHERE [ItemNumber] > 0 AND [SwitchboardID]=" & Me![SwitchboardID]
strSQL = strSQL & " ORDER BY [ItemNumber];"
Set rst = dbs.OpenRecordset(strSQL)

' If there are no options for this Switchboard Page,
' display a message. Otherwise, fill the page with the items.
If (rst.EOF) Then
Me![OptionLabel1].Caption = "There are no items for this switchboard page"
Else
While (Not (rst.EOF))
Me("Option" & rst![ItemNumber]).Visible = True
Me("OptionLabel" & rst![ItemNumber]).Visible = True
Me("OptionLabel" & rst![ItemNumber]).Caption = rst![ItemText]
rst.MoveNext
Wend
End If

' Close the recordset and the database.
rst.Close
dbs.Close

End Sub

Private Function HandleButtonClick(intBtn As Integer)
' This function is called when a button is clicked.
' intBtn indicates which button was clicked.

' Constants for the commands that can be executed.
Const conCmdGotoSwitchboard = 1
Const conCmdOpenFormAdd = 2
Const conCmdOpenFormBrowse = 3
Const conCmdOpenReport = 4
Const conCmdCustomizeSwitchboard = 5
Const conCmdExitApplication = 6
Const conCmdRunMacro = 7
Const conCmdRunCode = 8

' An error that is special cased.
Const conErrDoCmdCancelled = 2501

Dim dbs As Database
Dim rst As Recordset

On Error GoTo HandleButtonClick_Err

' Find the item in the Switchboard Items table
' that corresponds to the button that was clicked.
Set dbs = CurrentDb()
Set rst = dbs.OpenRecordset("Switchboard Items", dbOpenDynaset)
rst.FindFirst "[SwitchboardID]=" & Me![SwitchboardID] & " AND [ItemNumber]=" & intBtn

' If no item matches, report the error and exit the function.
If (rst.NoMatch) Then
MsgBox "There was an error reading the Switchboard Items table."
rst.Close
dbs.Close
Exit Function
End If

Select Case rst![Command]

' Go to another switchboard.
Case conCmdGotoSwitchboard
Me.Filter = "[ItemNumber] = 0 AND [SwitchboardID]=" & rst![Argument]

' Open a form in Add mode.
Case conCmdOpenFormAdd
DoCmd.OpenForm rst![Argument], , , , acAdd

' Open a form.
Case conCmdOpenFormBrowse
DoCmd.OpenForm rst![Argument]

' Open a report.
Case conCmdOpenReport
DoCmd.OpenReport rst![Argument], acPreview

' Customize the Switchboard.
Case conCmdCustomizeSwitchboard
' Handle the case where the Switchboard Manager
' is not installed (e.g. Minimal Install).
On Error Resume Next
Application.Run "WZMAIN80.sbm_Entry"
If (Err <> 0) Then MsgBox "Command not available."
On Error GoTo 0
' Update the form.
Me.Filter = "[ItemNumber] = 0 AND [Argument] = 'Default' "
Me.Caption = Nz(Me![ItemText], "")
FillOptions

' Exit the application.
Case conCmdExitApplication
CloseCurrentDatabase

' Run a macro.
Case conCmdRunMacro
DoCmd.RunMacro rst![Argument]

' Run code.
Case conCmdRunCode
Application.Run rst![Argument]

' Any other command is unrecognized.
Case Else
MsgBox "Unknown option."

End Select

' Close the recordset and the database.
rst.Close
dbs.Close

HandleButtonClick_Exit:
Exit Function

HandleButtonClick_Err:
' If the action was cancelled by the user for
' some reason, don't display an error message.
' Instead, resume on the next line.
If (Err = conErrDoCmdCancelled) Then
Resume Next
Else
MsgBox "There was an error executing the command.", vbCritical
Resume HandleButtonClick_Exit
End If

End Function

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