HTC 8125 / 8100 / MDA (USA) / K-JAM / P4300 (Wizard)

I'm trying to install windows mobile 6.0 for a friend on their 8125, but the phone is password protected. It will turn on, but before you can do anything, it requires a password, and since he doesn't remember it, I can't connect it to ActiveSync to do anything. Could anyone help me? Does anyone know how to get around this? Any help would be much appreciated.