The year you intend to purchase a home:
How much money (in U.S. dollars) are you willing and able to invest now (i.e. your starting lumpsum)?
How much money (in U.S. dollars) will you be willing and able to add to your investment each month?
How much money do you think your future home will cost you? (Used for comparison purposes only; this will not affect your investment's return)?
What percentage of the this purchase price do you want to pay as the down payment? (e.g. 10 for 10%)?
Now comes the interesting part: you can make guesses as to the future growth rate in each of five separate categories, including stocks, long-term bonds, CDs, mutual funds, and other modes of investment, and then decide how much you'd like to invest in each (as a percentage of your total available funds). Please note that the defaults in the growth rate are based on historical growth rates. You can either change them to your own guesses or leave them to calculate based on that data.