Hola
Tbn puedes utilizar la funcion shellExecute pero deberas hacer referencia a una libreria la shell32.dll
Private 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
si x es long
x=ShellExecute(hwnd, "Open", App.Path & "\arch.mdb", 0&, 0&, 1)