I have recently changed my computer, (still using XP though) and am having problems with the USB conection. I have set the system connection up using Bills Tech Tip 1 and have established a connection between the computer and the PR804. I can use the Technics Audio Recorder software OK, but when I try to upload or download files I get an error. The screen on the PR804 comes up most of the time with the yellow writing saying it is transferring the files and files even appear on my desktop. Then an error comes up and the transfer is aborted and the files disappear from the desktop. Any Ideas?