mgabutti - thanks for your post. I am going to move this to the PADS specific community where it will receive greater visibility. The Member Resources area is for general communities questions and suggestions.
If your parts have he RefDes on the "Top" layer you don't need to move them to the silk layer. If you really want to do it anyway, all you do is select them and open the properties dialog and change the layer setting to "Top Silkscreen". Again, there is no need to do this, All our parts are designed with RefDes on the top layer.