Won't help coding but to get your free version working (is it 409.1?) you may need to get some FTDI chip drivers for your cable. (blue usb cable?) http://www.ftdichip.com/FTDrivers.htm

Try downloading the free version of VCDS-lite from Ross-Tech too.

http://www.ross-tech.com/vcds-lite/download/ - need the download for '3rd party/dumb interfaces'