Hidden Drive

I have an external USB 2.0 drive that I cannot see in "my computer". Sometime back while trying out one of several trial versions of various "tweaking" programs I thought that hiding from everyone in the house would be cool. Now I don't remember which one I used to hide it with. The computer knows that it is there because when I plug it in I get the sound and balloon messages from XP that it is there and ready to use. But when I try to look for it in a search it tells me that the directory does not exist. I have to believe that it is something in the drive itself since it is not showing up on my other computer either. It does show up in device manager. I have seen it under the disk drives section with a "square" in the name and under the USB section. It shows the yellow exclamation mark and says this device cannot start(Code 10). Can anyone help me out on this one? Thanks