Costco estimates raised at Goldman: Goldman said it is raising its 2006 estimates on COST by 4 cents to $2.35 a share due to expansion plans, share repurchase, and positive earnings guidance. Maintained In-Line rating. Dominion Resources estimates lowered at Jefferies: Jefferies said it was lowering FY 2007 EPS estimates on D by 10 cents to $6.40 following the announcement of a disappointing gas sale. Maintained Hold rating and $78 target. Del Monte Foods estimates adjusted at Morgan Stanley: Morgan Stanley said it was lowering FY 2006 EPS estimates on DLM by 6 cents to $0.66 and raising FY 2007 EPS estimates by 3 cents to $0.83 on charges from discontinued operations. Maintained Equal-weight rating. McDonald's estimates raised at Prudential: Prudential said it is raising its 2006 estimates on MCD by a penny to $2.20 a share following strong February sales. Maintained Overweight rating. McDermott Int'l estimates raised at Jefferies: Jefferies said it was raising FY 2006 EPS estimates on MDR from $2.85 to $2.91 on Q4 results and backlog growth. Maintained Buy rating and $62 target. Tenet Healthcare estimates raised at Jefferies: Jefferies said it was raising FY 2006 EPS estimates on THC by 11 cents to -$0.14 following the company's Q4 call. Maintained Underperform rating and $7 target. Univision estimates raised at Goldman: Goldman said it is raising its 2006 estimates on UVN by 8 cents to $1.09 a share following strong Q4.