If your ulcer (or common sense) requires some fixed income in your portfolio, check out the iShares Lehman 1-3 year Treasury bond ( SHY). Especially with the interest rate uncertainty out there, fixed income could be a wise choice.
tool . It allows you to pick different ETFs and adjust the weightings in your hypothetical portfolio. Also, be sure to check out TheStreet.com's ETF section for new developments in the ETF industry, including new ETF offerings. Many of us long for simplification -- like my poor mother, who can't seem to figure out how use the TV in my house -- but it has to make financial sense. So do some investigation before you decide if simpler really is better.