Measuring time in range of microseconds.

Hi, I am writing a module to measure time taken between two events. I have to measure time in microseconds. Some articles says about High resolution timers. As per the article http://elinux.org/High_Resolution_Timers, I read cat /proc/timer_list which says 10000000ns as resolution ( which is 10ms). I think with this resolution I cannot measure in the range of microseconds. I couldn't able to find support for HR timer in kernel menuconfig. I am using kernel 2.6.36.2. Can you please help me to, "How do enable this timer. Or is there any other means to measure time or simply I have to use the timer hardware directly?" -- With Thanks, Sathishkumar D http://flowersopenlab.weebly.com/