Store the pictures in an array of Image controls. Use a vertical scrollbar to select the image. In the scrollbar's Change event handler, display the new image.

To prevent annoying blinking of the scrollbar, set its TabStop property to False.

Private Sub VS_Change()
    For j = 0 To imgChoices.Count - 1
        imgChoices(j).Visible = False
    Next
    imgChoices(vs.Value).Visible = True
End Sub