Welcome CarNut77; it's great that you've finally got to the point where you want to quit. I think support means a lot. My support was my family doctor, and SR. I didn't try AA but I wouldn't hesitate if I thought I needed it.
Have you thought about how your wife's decision to continue to drink will affect you? If she has a glass of wine in hand at the time you are used to drinking (after work) it may make things difficult for you. It would pay to have a strategy to cope such as stocking up with soft drinks, or not spending time around her at first. Cravings can be hard to cope with for a while; check some of the stickies for hints to avoid giving in to them.
Don't give up; you'll find life is so much better without the alcohol clouding things.