I'll give you more information then. This is a government office in which I have been working for 4 years. In the last year I've been given the responsibility of trying to clean up the messes of the previous admins, who have been using NetWare since version 3. We've previously started upgrading the user systems from Win 2k to XP. This is when this problem showed up. If you did a disk management check for free drive letters on Win 2k, it would reckognize mapped drives as being in use. To my knowledge, (and I could be wrong), it is only in Windows XP that there's this problem. I am quite aware that F drive is not 'needed' anymore, and I'm looking into moving the drive letters. But since that will cause not only political fallout, but problems with older, in-house custom applications that rely on specific drive mappings, I am looking for alternative methods first. Which is why I put out this request. The USBLETTER 'cool program' from Novell's website is a fix, but not a very good one. Someone posted the USBDLM program link, and that seems promising. In Government work, people don't like change, and it's an uphill battle for IT guys to implement these changes, no matter how trivial it may seem to us. I'm sure this is still the case in the private sector as well. But you're right ... F drive being in use is my problem. Which would explain why I'm the one who posted this request, and not you. I'm not looking for a solution on a silver platter, just some ideas and points of view.