So I was able to save the LABSharpen.scm file to the plug-ins folder using Windows XP, but I still can get the plug-in to work. When I go to the plug-in folder, I can see the LABSharpen.scm file there, but I can highlight or click on it. It's in grey. Anyone know what I need to do next to get this to work. Any suggestions would be greatly appreciated! Thanks everyone.