In Declarations section
Public Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
In Code
Public Sub PrintThisDoc(formname As Long, FileName As String)
Dim x As Long
x = ShellExecute(formname, "Print", FileName, 0&, 0&, 3)
End Sub