Finding And Opening A Specific Record From A Switchboard

I have created a database with a switchboard and a form ("RMA"). Currently, on my "RMA" form I have a command button that allows the user to find a specific record by entering an RMA number into an input box. My code is as follows:

Private Sub cmdFindRMA_Click()
Dim myFilter as String
If vFindRMA = "" Then 'vFindRMA is a global variable, string.
vFindRMA = InputBox ("Enter the RMA Number to find:", "Find RMA", "", 5000, 3000)
myFilter = "[RMA_Number]='" & vFindRMA & "'"
Me.Filter = myFilter
If Me.Filter = "" Then
Me.FilterOn = False
Else
Me.FilterOn = True
End If
End If
vFindRMA = ""
End Sub

I want to be able to remove this command button from my RMA form and add it to my Switchboard. My problem is, I don't know what code I need to use in order for it to work from the switchboard. Can anyone help?

S.Pommier