I am new to this application.Installing parallels 2.5 yesterday onto my 10.4.10, I find like many others issues with USB devices, I am getting the message re device being used by another apllication... I think I have downloaded build 3214 - should I get this info when I go to "about parallels"? - but my problem seems to persist. Done all the usual, rebooting etc. and drawn a blank. Can't use pen driver, printer etc. and don't seem to be able to drag and drop files from one OS to another (?explorer not present) Very frustrated.