newstepmomma, do you have any farmers markets or even better, any organic farms near you? Or how about a community garden where the kids can be invloved with the growing, harvesting and then cooking and eating veggies? That might get them more interested.
But honestly, on the not so touchy feely tip, I am more of a "this is what we are having for dinner, eat it or not" mindset. This is pretty much how I was raised, and how we do it in our house now, and I think kids prefer it, actually. I believe children crave boundaries and having every meal be their choice can be too overwhelming, especially if they are not old/matrue enough to make healthy choices. If you gently state that the new rules are that you are making one dinner for the whole family and that's that. Ask for their input by offering choices "we can either have tacos or lasgna tonight, which would you like?" You will likely get some resistnace at first, but I think if you stick to it and be consistent, they will get on board pretty quickly.
By the way, both tacos and lasagna are easy dishes to throw in veggies and the don't even notice they're there. Zuccinni and mushrooms, carrots and spinach, chop it up and mix in it with your taco or lasagna filling, use lots of seasoning and they probably won't even notice them. Another good option is pizza with veggie toppings - they can make their own individual pizzas, which kids always love doing. You can even use veggie pepperoni and not tell they - they'll never know the difference, it tastes so much the same.