Thank you for your info, but the fact is that PicoLog (if regdriver pico is not run) states an error saying pico.sys can not be found. This issue is resolved by calling regdriver. Whatismore we are also using Visual C++ based proprietary software, which through the corresponding dll requires pico.sys.
The fact is that at times the ADC-12 works as it should, but at times it does not. If I understand you correctly there is no other solution than buying the USB to parallel converter, except using an older vesion of Microsoft Windows.