Morning News Roundup

Some of the morning's news and notes highlights:

• Asian markets lower overnight
• Downside greater than upside for Microsoft after Vista launch - Barron's
• Wal-Mart sees January same-store sales up 2.2%
• Triad Hospitals nears private-equity pact - WSJ
• Harley-Davidson mentioned negatively in Heard on the Street
• Nigeria oil workers call off strike - AP
• Cognizant Tech beats by $0.03; guides above consensus for Q1
• Humana beats by $0.04; guides Q1 EPS below consensus
• Nighthawk Radiology profiled in New America section of IBD
• In email to workers, Michael Dell outlines cost-cutting moves
• Verint Systems estimates raised at RBC
• IntercontinentalExchange estimates raised at Goldman
• Overstock.com misses by $1.08
• ISM Services 59.0 vs 57.0 consensus