Like Jetta 97 said........ ID Parts is one of our distribs and you should have received a document that tells you how to register....Register on http://ross-tech.com/ , and after that call them and they will help you.
The VCDS installer installs the stuff you need for whatever version of Windows (32 bit or 64 bit) that you have running at the time you run the installer. If it works on 32-bit, then it sounds like you installed under 32-bit Windows and probably don't have a 64-bit driver installed. Try re-installing while you have your 64-bit Windows running. You may wish to choose a different folder to install to than the default, for example VCDS-64 instead of just VCDS.Yes it is now dual boot win 7 64 and win 7 32 bit. I really only use 32bit for vcds.