Microsoft has long been prickly about Apple's inspired " Get a Mac " ad campaign; Chairman Bill Gates once accused Apple of "lying" with the TV spots. Now the tables have turned , and Microsoft is unabashedly gleeful to get under Apple's skin. The Redmond, Washington software company has been running an as series called "Laptop Hunters" designed to make the point that Macs are expensive. The ads made Apple finally snap, says Microsoft COO Kevin Turner (pictured): Two weeks ago we got