Welcome Eric!
We (6) did exactly this when we were in Bordeaux in June. We visited excellent wineries including Chateau Lafite Rothschild (which required special arrangements) and Lynch Bagge in Bordeaux and another one in St. Emillion. It really is the BEST way to go. Besides the tour through out, you also get to sample which was fun.

We are on the Voyager right now, as are Joanna & Tony who were with us so I don't have the guide's name and email address. I'm hoping that Anne will see this and be able to help you since Anne and Gary were also with us.

I may have posted this information somewhere on this board...I can't remember.