Inserting a Picture into Shape Quickly

I am working with Excel for Mac 2011.

In the SmartArt section they have a picture tab, where you can select from various formats. None of these formats fit my needs. So my question is, can I customize these?

If not, can I add a macro to a shape so that it can do what the picture boxes do, opening the folder to select a photo, and put it into excel in the shape, location, and size of the shape?

With this code from the microsoft website I was able to get the file selection to pop up but was not able to get a .gif or jpeg

Any ideas on what I would need to change to make this possible?

Sub Select_File_Or_Files_Mac()
    Dim MyPath As String
    Dim MyScript As String
    Dim MyFiles As String
    Dim MySplit As Variant
    Dim N As Long
    Dim Fname As String
    Dim mybook As Workbook

    On Error Resume Next
    MyPath = MacScript("return (path to documents folder) as String")
    'Or use MyPath = "Macintosh HD:Users:Ron:Desktop:TestFolder:"

    ' In the following statement, change true to false in the line "multiple 
    ' selections allowed true" if you do not want to be able to select more 
    ' than one file. Additionally, if you want to filter for multiple files, change 
    ' {""com.microsoft.Excel.xls""} to 
    ' {""com.microsoft.excel.xls"",""public.comma-separated-values-text""}
    ' if you want to filter on xls and csv files, for example.
    MyScript = _
    "set applescript's text item delimiters to "","" " & vbNewLine & _
               "set theFiles to (choose file of type " & _
             " {""com.microsoft.Excel.xls""} " & _
               "with prompt ""Please select a file or files"" default location alias """ & _
               MyPath & """ multiple selections allowed true) as string" & vbNewLine & _
               "set applescript's text item delimiters to """" " & vbNewLine & _
               "return theFiles"

    MyFiles = MacScript(MyScript)
    On Error GoTo 0

    If MyFiles <> "" Then
        With Application
            .ScreenUpdating = False
            .EnableEvents = False
        End With

        MySplit = Split(MyFiles, ",")
        For N = LBound(MySplit) To UBound(MySplit)

            ' Get the file name only and test to see if it is open.
            Fname = Right(MySplit(N), Len(MySplit(N)) - InStrRev(MySplit(N), Application.PathSeparator, , 1))
            If bIsBookOpen(Fname) = False Then

                Set mybook = Nothing
                On Error Resume Next
                Set mybook = Workbooks.Open(MySplit(N))
                On Error GoTo 0

                If Not mybook Is Nothing Then
                    MsgBox "You open this file : " & MySplit(N) & vbNewLine & _
                           "And after you press OK it will be closed" & vbNewLine & _
                           "without saving, replace this line with your own code."
                    mybook.Close SaveChanges:=False
                End If
            Else
                MsgBox "We skipped this file : " & MySplit(N) & " because it Is already open."
            End If
        Next N
        With Application
            .ScreenUpdating = True
            .EnableEvents = True
        End With
    End If
End Sub

Function bIsBookOpen(ByRef szBookName As String) As Boolean
' Contributed by Rob Bovey
    On Error Resume Next
    bIsBookOpen = Not (Application.Workbooks(szBookName) Is Nothing)
End Function

Yes, I can do this, but for the reporting I am doing I need to drop many pictures into the shapes and it takes too long right clicking and going through the folders, I'd like to be able to drop pictures in or have it open to a specific folder.