Use Bloomberg, available in the Margolis Market Information Lab (MIL) at the Business Instructional Facility (BIF). Type EXTF and hit GO.

For more info on Exchange Trades Funds (ETFs) take a look at:

• Morningstar - Exchange-Traded Funds
• MSN Money - Exchange-Traded Funds (ETF) center
• Yahoo! Finance - Exchange-Traded Funds (ETF) Center