Widnows 7 and default printer for multiple users

i purchase new computers this year, windows 7. set one up and added several printers using one as the default. when a new user sign on for the first time, there printer is being set to the default printer. how and where can i change this so that when a new user sign on for the first time, they get a pdf printer to be there default. don't want to use group policy, looking to make a change on the pc.

thanks

laura

Login script would do it.....