VBA Code That Opens A File From A Directory

In the following code, What do I need to add to allow the selected file to open when I click on it? I have a drop down menu that lists my .xls files.....as of now when I choose a file nothing opens.

Sub Auto_Close()
On Error Resume Next
Application. CommandBars("Patient List").Delete
On Error Goto 0
End Sub

'================================

Sub Auto_Open()

Dim cb As CommandBar
Dim ctrl As CommandBarControl

On Error Resume Next
Application.CommandBars("Patient List").Delete
On Error Goto 0