[ul][li]Q1:
The focus isn't being lost. The dotted line represents the focus. If you see the dotted line then that means the window will respond to the keyboard; in order words the window has the focus.
There's a difference between focus and selection.
(Technically, the selection is not being lost either because the item below the one that was moved was not selected to start with. After moving the selected item there is no longer a selection to lose.)
If you want to select the item that has the focus then you just need to push the space bar.
[/li]
[li]Q2:
I remember, a while ago, someone wrote a button which cycled through different drive letters. I can't find the thread at the moment though. I think it used a short DOS batch file, or maybe VBScript, to work out which drive to go to based on the current path that Opus told it.
[/li]
[li]General:
This thread is a good example of why it isn't a good idea to ask unrelated questions in the same thread. From the FAQs: Ask one question per thread.[/li][/ul]