We think this is not possible on the 2006 model. Some 2007 HCH2 owners say it IS a feature on them, but their steps do not work for the 2006 HCH2. Bummer. They must've upgraded the sofware on the chip to allow it for 2007. Many people here do not like that only the driver's door unlocks (me included).
There are messages on this board talking all about it. Use search to find 'em.
And welcome!

Steve

STOP terrorism - Drive a HYBRID

Vehicles:
350 miles a week ------------ 2006 HCH II, Magnetic Pearl, w/NAVI (born on May 25, 2006)
350 miles a month ---------- 2003 Mazda Tribute ES-V6
350 miles a year (for now) - 1986 Mercedes 560SL