Scripting Run as different user

Is it possible to script running a program as a different user. I have a program that needs admin privilages to run. Currently I have the program shortcut setup to use the run as different user. Then the Run as different user dialog box pops up and they enter the password for the admin privilages. Is there anyway that a username and password can be passed without the user ever having to do anything but click on the shortcut? Any help is greatly appreciated.