Pretend you are in your late 60s.

With careful planning, you have about $35,000 per year for living expenses after taxes. Find a Web site that compares the cost of living in different cities.

1. Calculate how much you would need if you lived in U.S. cities that are attractive to retirees, such as West Palm Beach, Florida; Phoenix, Arizona;

and Dallas, Texas.

2. Compute by using spreadsheet or presentation software to develop charts and/or graphs comparing the cost of living in different cities.