ok, I got my grubby hands on ADBProber 1.00. Can any please tell me how to use it to help with figuring out how the Logitech Trackman Marble works? -xiamin Technomagus artium occultarum detestibiliumque Nargumm Industries http://www.cris.com/~ingerrn http://www.netvirtual.com/iris/simon/art.html