MS Dialog Automation Objects

I am trying to use the MS Dialog Automation Objects in a project and I am have set the multiselect property to True. However, when multiple files are selected, only one is listed in the FileName property, and the FileNames.Count property is 1.As an unsupported dll, finding help through official channels has been fruitless. Does anyone have a clue how to select multiple files in this way (and make use of them)?

Thanks,
Ed