We have an SBS2003 server with a mixture of XP and Win 7 workstations. We need to have the duration of time before the locked pc login appears on the desktop for a few machines that run presentations unattended. The login screen keeps popping up and interrupting the presentations until someone can log in again. They asked us to change the time for everyone using group policy. But we don't want to increase this for all pc's and have the possiblity of someone getting on an idle pc because this timeout is to long. How do we change the time for everyone using Group Policy? Is it the screen savor password?? Or can we do this for just a few specific machines?