Roth IRA for 2009?

I am debating whether, in 2009, I should opt to invest in a new fund with Vanguard. I originally went with the 500 Index fund and now would like to invest in either the Total International Stock Index fund or the Small-Cap Index fund to offset the 500 Index. The reason I initially invested in the 500 Index was because I am considering, in the next 5+ years, using some of that money to help with a down payment on a condo. (Hopefully the markets will be back on the upswing by that time so I'll have some potential returns to utilize!)

From Wikipedia: "Up to $10,000 in earnings withdrawals are considered qualified (tax-free) if the money is used to acquire a principal residence. This house must be acquired by the Roth IRA owner, their spouse, or their lineal ancestors and descendants. The owner or qualified relative who receives such a distribution must not have owned a home in the previous 24 months."

Even if I do not decide to use those funds, I am still happy to have picked a broad index fund to begin my investing adventure with. I just want a bit more diversification in this economic climate. If I decide to add a different index fund to my mix for 2009, I will have to wait until I save up the initial $3K minimum to invest!