[integra144]

I just got a Sprint PPC 6800 to replace my Treo 700wx because I could not open Word 2007 documents and html emails. The current problem I am having is even with button lock the phone will unlock itself in my pocket and cause phone calls to be placed. For example, when I get a email it unlock and turns on in my pocket causing it to dial numbers and waste battery. With my 700WX the button lock made you press the center button after turning it on to unlock it after pressing the power. How do I enable this feature on this device?
Thanks