I have both, the media card and Blackberry Desktop Manager. When I open Desktop Manager and plug in my 9530, my pictures automatically transfer to Desktop Manager.
But, I can not transfer from my Desktop manager to my pictures file on my C drive.
I'm sure it's quick and easy...i just can't figure it out.
If you enable MassStorage Mode on the BB, you can use drag/drop to either copy or move files from the sd card to your computer folder of choice. MassStorage is generally under Options/Memory (might be otherwise), BB/Menu button and scroll to find MassStorage.
But it sounds as if they are showing in Roxio-DesktopManager to you should be able to manipulate them from that view???