I will have to check but i'm pretty sure that you can only do it on ther GT4 or thr MY06  
  
Please let us know, i'm interested in knowing it too, and i have a MY06 
  
Right, you have to press and hold both the lock and unlock buttons on the fob for 5 sec to disable the antihijack facility so that both doors open at the same time. Do the same to turn it back on  
  
Cool, gonna try that tonight  
  
thanks