VS 2008 A From To Backup To A Drive From My Computer

A form that will have a drop down menu that will display the drives available in My computer. I really only want this list to show USB drives, but I wouldn't know how to limit the list to only show certain drive letters. And then how you would know what Drive letter would appear.So they would select there backup location from the drop down. Then the next option would be to select from 3 or 4 different different options that would have have radio buttons next to the options that you could select. Would be like: Playlists, Schedule, Media Library. They could select all or one of these. Each of these would represent a folder, or File that would be copied to a folder on the selected USB drive. Then the final button would be labelled Backup, and upon pressing that depending on what options were selected files would start to copy.

Now I know how to do the final copy part kinda, what I don't know is how to do is select the destination on the fly from what was selected in the drop down menu. And then how to make sure that what is being copied is that that is selected from the check boxes.