Nope. I don't agree any of these answers. Best way to do is do by yourself. Just spend little time on reading the instructions. If you need any further help or you are getting hard time to understand in filling out the forms in some area, just call INS they are friendly and they will help you. Thats what their customer service is for. Whenever I had processed a green card for me and my family, I never had to spend even a penny for lawyer. Your lawyer can't make your process faster. Their role is nothing more than "Lekhandas".