Real Estate;Investing Real Estate: The Going Gets Tougher Interest rates are rising and markets across the U.S. that have seen phenomonal growth are slowing or declining. What's an investor to do? Investing Special Report: Investing in Real Estate By Christopher Palmeri http://www.businessweek.com/investor/content/may2006/pi20060522_889945.htm http://www.businessweek.com/investor/content/may2006/pi20060522_749849.htm,http://www.businessweek.com/investor/content/may2006/pi20060522_866341.htm,http://www.businessweek.com/investor/content/may2006/pi20060522_740425.htm True