hello all .. not really a photographer ... but needing some professional shots. here's the scoop: we're a professional marketing/media firm that has blown up in the past year. more and more we're in need of professional shots and i want to start doing them myself. next project: build a website for a restaurant chain...Olive Garden competitor...need photos of the food on plates like you see in the menus, websites and commercials. we also take pictures of the businesses and people to put in their websites, menus and marketing materials. this camera wont be used all the time. only when these types of projects come up and i may use it at home now that i have a baby due this month. i'm looking at a nikon d40 with the 18-55mm lens and a canon eos digital rebel xt with the 18-55mm suggestions on what i should be considering for a camera? is 6MP plenty for what i need? i'm looking to spend $500 ...give or take a couple. Thanks for the input everyone!!