Windows Explorer doesn't lend itself very well to identify your mapped drives. When user's have an explorer window open that looks like this:
Having them find a given drive letter, "select your H: drive", isn't as easy as it sounds.
But by giving explorer a little face-lift, their explorer windows can look like this:
Now isn't that better? Simply copy UPCASE.EXE and ENABLEDRIVEICONS.EXE to everyone's Windows directory:
copy f:\public\upcase.exe %windir% /y
copy f:\public\enabledriveicons.exe %windir% /y
Then just run EnableDriveIcons.exe once for each user (or just add to the machine startup).