Hi All, Does anybody on the list have any documentation on designing USB devices or know of where I can get this documentation. I am talking about actual phisical devices not software or drivers. I want to make an interface that plugs up to my iBook to control my model trainset. Thanks in advanced, Ashley ~)~ ============================================================= Ashley Butterworth Email: macbse@... ============================================================= _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com