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How do I choose 401k investment funds?
I disagree strongly with chasing expenses. Don't chase pennies until your are comfortable with an allocation that makes sense to you. Focus on building a diversified portfolio. Look at all of the funds, and put them in a portfolio in a tool like Google finance. Screen out funds with 1-3 stars. Search around on this site for questions about portfolios -- there's good advice there. If you're still not comfortable, look for a fee-based advisor.