There are lots of good chocolate chip recipes posted here. Just enter "chocolate chip" in the search box & select this forum. Below is a trouble-shooting guide for flat cookies that might help also.

Here is a link that might be useful: Baking 911

Here's a recent discussion on the Cooking forum.

Here is a link that might be useful: flat chocolate chip cookies

The chocolate chip cookie recipe posted by DanaIN on the flat chocolate chip cookies thread is a GOOD recipe. It might be my favorite yet. I think the egg yolk helps to keep the cookies moist.

this is an old family favorite

Chocolate Chip Cookie

1 cup brown sugar (packed)
2/3 cup white sugar
1 cup oleo
2 eggs
1 tsp. vanilla
2 1/2 cups flour
1 tsp. baking soda
1 tsp. salt
1 cup chocolate chips
1 cup nuts (optional)
1 cup quick cooking oatmeal

Bake approximately 15 minutes at 350 degrees