I am sorry and I hope that this doesn't start a huge post session but I am trying to get to the bottom of this in order to help others with similar problems. What is so different with NT5 usb support and Win98 usb? There can't be that much difference as the protocols should be identical. I want to re-write my drivers to make them work with Win2k. I don't have any problems with the standard hub, Win2k accepts that just fine and probably works with every readers system...but the MSD adapter (scsi to usb) is driving me insane. Specifically it is the shuttle usb adapter. It sees the driver, knows what it is but says that it isn't specifically written for Win2k.(even after rewriting the darned thing) Any help would be appreciated.