If(System.IO.File.Exists(path As String) = true){
   MsgBox( message As String )
}else{
   FileCopy(Source As String, Destination As String)
}

Option Explicit
Dim fso As FileSystemObject
Private Sub Form_Load()
Dim strFileName As String
Set fso = New FileSystemObject
strFileName = Text1.Text
If fso.FileExists(strFileName) Then
   MsgBox "Blah, Blah, Blah, the File exists", vbInformation, "File Status"
Else
   MsgBox "Blah, Blah, Blah, the File does not exist.", vbInformation, "File Status"
End If
Set fso = Nothing
End Sub