From a CNN article , Mars Reconnaissance Orbiter will insert into Mars orbit on March 10th.
"It's going to be difficult to get it into orbit," Doug McCuistion, who heads the NASA Mars Exploration Program, said at a briefing. "Mars is hard, Mars can be unpredictable, but we've got a good team here."
NASA has only a 65 percent success rate in getting space probes to orbit Mars, as opposed to a more than 80 percent success rate in managing to land spacecrafts on its surface, he said.
The tricky part is getting the orbiter to slow down enough to be captured by the planet's gravity.
"We're getting into the dangerous portion of the mission," said James Graf, the project's manager.
The JPL/NASA website for Mars Reconnaissance Orbiter here.