We opened a Roth IRA for my wife this weekend, selecting the Vanguard 500 Index Fund as her investment. The Vanguard 500 Index Fund is the largest mutual fund in the world and attempts to attempt to mirror the S&P 500.

The fund has an initial minimum investment of $3,000; additional investments are $100. We plan to fully fund her Roth IRA ($4,000 in 2007) , as well as open and fully fund a Roth IRA for me.