I got this from an old post by Shogun.
First, don't panic - there are options
Calm down.
The classic, approved method is this:
If using remote locking, GET THE KEY.
Go to the PASSENGERS door... the manual override is definitely present there. This procedure should also work on the driver's door too, but it's your choice and one maybe more difficult than the other.
Put in the key (duh)
Lift the handle; hold it up now
Turn the key to the rear of the car; should hit resistance at about 45 degrees
Carry on turning to 90 degrees - it will be stiff, it's meant ot be. (Stiff does not mean break the key or lock. Your car may have problems or be different - your call).
at 90 degrees lock pin should pop up
return key to vertical
let handle down
open door as normal
Other alternatives are based around at least applying 12v to power locks temporarily. This WILL be required to get into the other doors IF YOU LOCKED UP from the drivers door with the "deadlock" feature... then all the other doors are in deadlock "ignore the pin" mode (and possibly the trunk too).