Found tis on some website... Eh... But dunno u all out there...
Eh... Me still stickin to the "traditional way" to adjust my side
mirror... Hehee... Dare not try out... 
Advice from US National Safety Council on Safe
Driving.
Before changing lanes, look at front mirror above dashboard - but
(very important) the two side mirrors to cover the "blind spots"
when cars on your sides move out of range of the fonrt
mirror.
Some of the most serious preventable accidents occur because of
blind spots while driving! Now there is a remarkable simple
solution
discovered by an engineer named George Platter. He presented his
method at the prestigious Society of Automotive Engineers.
The National Safety Council tested his theory and discovered, to
their amazement, that it works! The method has been fully endorsed
by the National Safety Council as described in their
September/October issue of Traffic Safety. Here's how it
works.
First, forget how we learned to adjust our outside mirrors by
plopping behind the steering wheel and turning the mirrors so that
we
just saw the side of our car looking back at us in the
mirrors.
Instead, adjust the driver's side mirror by resting your head
against the driver's side window and then turning the mirror so
that you just
see the side of your car.
Once this is set, move to the centre of the vehicle and turn the
passenger side mirror so that you can just see the side of your
car
from the centre of the vehicle.
That's it. You won't see your own car in either mirror, yet what
you will see is far better. Cars behind you show up as usual in the
inside rear-view mirror above the dash, but the instant the car
leaves your field of vision from the rear-view mirror the outside
mirror picks it up. No blind spot; no delays; no wondering where
that car about to pass you has disappeared to, and no waiting a few
seconds for the car that you just saw in your rear-view mirror to
show up in your outside mirrors.
All three mirrors work in harmony with one another, and the blind
spot has been eliminated!
Bernice Schira
Learning Resource Centre
Vermilion Campus
Aug 29 2001