I always have the same problem when I start exercising after a hiatus. I am literally *starving* to death by the time I get home. I now time my workouts so that I can have lunch or breakfast when I get back from the gym. Can you not have your dinner when you get home?
Incidentally, over the last 4 months my ravenousity after the gym has decreased as I've gotten fitter and my body has adjusted to the exercise. I'm now at the point where I can eat a quick protein (a boiled egg, usually) and go about my business for another hour or so before I need to eat a meal. You might find the same to be true for you, the longer you do the workouts.
Smoke free since 2/11/08.