Hey Bill.
(I'm using XP)
Same prob here, so can I ask you to clarify one or two things.
1. Where does one access the "Disk Manager"?
UPDATE: This said by NickM elsewhere: "If Win2K or XP, then open Control panel, Administrative Tools, Computer Management, under Storage click on Disk Management, right click the partition and select Change Drive Letter and Paths."
2. What is WM10? (Win Media Player, is it?)
3. Why move letters "up"? If you have three drives, D: E: and F:, will new volumes not just appear as G: H: and I:; just as they would have appeared as D: E: and F: had there been no other D: E: and F:, therefore being one and the same thing?
Another thing - I have a "Removable Disk F:" in My Computer. But it doesn't seem to relate to anything - there is certainly no disk connected/or card/or anything else at this moment to my PC - but if I go right click > eject it won't allow me. I dunno what the thing is. Perhaps the "Disk Manager" you refer to will have enough power to remove it, no?
UPDATE: With NickM's fix here
http://yabb.jriver.com/interact/index.php?topic=29942.0 I can move this pesky F to Z so it doesn't annoy me. It's still there though.