What is the best plan to save money for a car?

It will be 2 years in March that I have not had a car. I live in MN and its horrible during the winter. My goal is to have a car by May/June of 09. I want to save money but im having serious difficulty. I didnt realize how hard it is to save money. I am looking to buy a used car. Price range between $1500-$3000. How and what is the best laid out plan to make this happen?

Make more. Spend less.