Go to the Fidelity, CNN, Edward Jones, SmartMoney, AARP, and so on, retirement worksheets. Put in financial information that applies to you, your expectations, and your desires. In a category that you do not understand, try to Wikipedia it or Google it. At the very least, play with the unknown category to determine whether or not it has a large influence. If so, set it conservatively. Copy your input sheet and analysis results.