I'm sure you could make something up in word, but I was checking my google reader and this blog has some good ideas: http://www.5dollardinners.com
She just put up a link to a monthly menu to fill-in. I think I want to try and do this tonight with DH and see how well we stick to it. http://www.5dollardinners.com/wp-content/uploads/2010/02/monthly_menu_planner.pdf