Grasshopper - you will have to learn how to eat out properly. Just because you are trying to lose weight doesn't mean the end of your social life!
The best bets are to stick with lean proteins and veggies. Almost every place will serve some sort of grilled chicken that you can have.
If you go to the nutrisystem website - they have a section called "dining out' (under the My Program tab), this gives you parameters of what to eat for different types of cuisines. Very helpful.
Don't be afraid to ask for what you want. You are paying for food, so get it prepared the way you want. Most places are happy to accomodate you. Even if there isn't something on the menu, say all dishes are sauced - ask for them to make one without the sauce. Just tip more
I eat out dinner at least once or twice a week, and breakfast twice a week - so you can lose weight while eating out.