Stumpy, a heartfelt hug for you and your wife.
One thing you shouldn't do is to make decisions in a rush at this moment. You and your wife should calmly devise a strategy on what to do and how to do it. Once you learn that the Jehovah's Witnesses don't have "the truth", you must figure out what to do with that information. You must ask yourselves what are you willing to lose by leaving. If you still believe in God at the end of this process (many end up losing their faith, and I can assure you there's nothing tragic with it) you should be willing to re-evaluate what God wants, what is God, and if he's really there to begin with. One thing I did was to look back into my life as a believer and consider if all the things I used to credit Jehovah for in my personal life couldn't have an explanation that didn't require a supernatural intervention.
For the time being, you and your wife should indulge in your thirst for information. Read, read, read. Educate yourselves, because that will only reinforce your conviction that "the truth" is something that the Watchtower doesn't possess, and that they are just another false religion. This will also strenghten you both to resist the emotional pull / guilt trip to return. Make no mistake, it's a very very powerful pull, and some begin to rationalize that they can live with their doubts, or stay because of the social aspects of the life as a Witness, or that the Watchtower isn't so bad, because they're only "imperfect men".
The more you educate yourselves, the more you'll realize the monstruosity of this life-sucking cult, and the less inclined you'll become to stay in it, because God has nothing to do with it.
And, as DoC said, DON'T DISCUSS THIS WITH ANYONE, TRUST NO ONE, even your dearest friend. When the "cult mode" kicks in, the Witness is conditioned to respond by defending 'mother' at all cost. Beware!
Eden