Preheat oven to 350 degrees F (175 degrees C). In a medium bowl, stir together the flour, baking soda, and salt; set aside.
In a large bowl, cream
together the margarine and 2 cups sugar until light and fluffy. Beat in
the eggs one at a time, then the vanilla. Gradually stir in the dry
ingredients until just blended. Roll the dough into walnut sized balls
and roll the balls in remaining 1/4 cup of sugar. Place cookies 2 inches
apart onto ungreased cookie sheets and flatten slightly.
Bake for 8 to 10
minutes in the preheated oven, until lightly browned at the edges. Allow
cookies to cool on baking sheet for 5 minutes before removing to a wire
rack to cool completely.