unlock screen buttons

[developa]

hi folks,

i have a strange problem with my mda vario 2. (htc hermes)
when my mobile locks and i want to unlock it i just get the small keyboard to do so. i have configured a numerical pin only but i always get the keyboard.
does anybody know the registry key to change the unlock method?
i just want to have the big number buttons.

thanks in advance guys!

cheers
developa