MOST NOTEWORTHY: Google, Boyd Gaming and Microsoft were today's noteworthy initiations:

• Kaufman Bros. believes Google (NASDAQ: GOOG) has "only begun to scratch the surface" of its local market opportunity. Shares were assumed with a Buy rating and $680 target.
  
• Banc of America believes Boyd Gaming (NYSE: BYD) will face financing challenges with its Echelon resort, and initiated shares with a Sell rating and $14 target.
  
• Lehman reinstated Microsoft (NASDAQ: MSFT) with an Equal Weight rating and $34 target based on peaking Vista/Office 2007 cycles, uncertain online strategy, and increased investment.

OTHER INITIATIONS:

• Goldman started AON Corp. (NYSE: AOC) with a Neutral rating.
  
• Broadpoint initiated Covanta (NYSE: CVA) with a Buy rating and $32 target.
  
• Companhia Vale Do Rio Doce (NYSE: RIO) was assumed at Citigroup with a Buy rating and $48 target.