My computers at home see the contents of my Fuze’s microSD card in MTP and MSC mode’s perfectly fine. However my PC at work can only see the microSD card when I put the Fuze in MTP mode. In MSC mode it doesn’t even show the existence of card [drive letter for internal memory, but none for microSD].
Almost all of the files on the card were transferred to it in MSC mode, and my work PC has Windows Media Player 11 [not that it should matter for MSC anyway]
Go to Disk Management (right-click My Computer, Manage) and see if the volume for the card shows up. If so you can right click on the volume and manually assign a drive letter.
It shows up in disk management, which cleared up the confusion. The drive letter windows assigned to the microSD was the same drive letter that was assigned to a network drive. The network drive is no longer connected, so presumably windows assumed it was ok to use that letter (F:), even though in explorer it still displayed F: drive as the network drive, clicking on that drive brought up the contents of the microSD card, even though the drive still displayed as the name of the network drive.