Bottom line...

For the year, though, Dell remained No. 1, hitting a worldwide market share of 16.9 percent, up 25 percent from the overall figure for 2002 of 15.1 percent. HP's annual market share came in at 16.4 percent worldwide, up 14.5 percent from its share of 16 percent for 2002 as a whole.

In the United States, Dell stayed on top with a 30.2 percent market share for the fourth quarter and at 30.9 percent for the year. HP came in with a 21.7 percent share for the quarter and a 20.6 percent for the year in the United States.