i just bought a dell xps 420 with windows vista 32 bit. the mouse pointer will not center on any object or line. i contacted dell suppoprt and got no help there. i've tried reinstalling the driver, other pointing devices, other desktop configurations, and nothing seems to work. is this a problem others have experienced with dell systems or vista? i have to move the pointer below above or next to the object or line to be able to click on it.