l am also having problems. l have extracted the files to a temp folder, there r 5 files correct ? , if l double click on the dpinst.exe file l get a message , do you want the computer to make the following changes , l click on yes and stuff all happens, l then go to device managers find the usb serial cable in question then to update driver , then browse my computer, then browse the location of the driver files which in this case is the temp folder, l then click on next and immediately get unable to install usb-serial controller. why ??????. I am running window 7 64 bit on a mack that has a windows partition, someone please help !