Sorry worm but it DOES work on Windows XP. Make sure you have no spaces in the bat file. Except those shown above EXACTLY. Make sure that when you save the file you save it as a .bat file. If you cant see the actual file extensions then make them visible by going to Control Panel/Folder Options. Then if the file is really O.K the true name will be messenger.bat. Double click, have fun. BTW, it does help to be online!