Pur the oats in a food processor and grind until you have a fine powder. Mix them with the flour, baking soda, baking powder and salt, then set aside.
Using an electric mixer, beat the butter and both sugars until light and creamy. Add eggs and vanilla and beat until well blended, scraping side of the bowl often.
Stir in the flour mixture, chocolate and nuts.
Roll into balls and place two inches apart on a cookie sheet. Bake for 10 to 12 minutes at 375 degrees.