One of the best pieces of advice I received was to look at foods you already eat that are vegetarian. (Spaghetti with marinara, grilled cheese sandwiches, bean burritoes, cheese and veggie pizza, cereal and milk, that sort of thing).
Then try for just a few meals a week -- most people seem to have the most difficulty with lunch and dinner, so I'd focus on transitioning those. The easiest "beginner" meals are often substitutions, like Boca burgers for regular hamburgers. If you're worried about soy, there are some non-soy faux meats available (Quorn comes to mind, although there's controversy about that, too).
Make up your own "recipe book" of vegetarian recipes -- whenever you see one that looks good (here or elsewhere), write it down and try it out. If you like it, you can start making it regularly. You'd be surprised at how relatively easy it is to make a veggie version of things (lasagna and chili are super-easy, surprisingly).
If you've never eaten many vegetables or beans, I'd be cautious with eating a ton of them at first: you can get gas pains and diarrhea if you go too crazy when your body's not used to it. Increase your intake of these slowly.
If you don't think you're getting enough protein, try low or nonfat cottage cheese or egg whites. Both are almost pure protein. (When you're ready to go non-dairy/non-egg, you'll probably be knowledgeable enough by then to know what sort of things to substitute ... cross that bridge when you come to it!
And as ripvanfish said, stick around the forum. It's definitely a motivator!