Change printer default devmode on NT4

Hi,
On NT4, I opened the propertysheets of my printer driver and changed settings via control panel, then i pushed the apply button, during those operation, regmonitor detected that the “default devmode” key had been modified twice. The first time was modified by my driver, but subsequent, system covered this key with original “default devmode”. I don’t know how this occured and how to avoid this situation.

Best Regards

hcheng_qi