I went all out on this one, and may have over done it.
I have created a program that will prompt the user for their AD username/password, and verifies that they are in the "MDT Users" group. I have created a package and program for this but I'm having problems adding it to my task sequence.
I can't add it to the task sequence if the program is set to allow user interaction, but without it, I can't enter my password!
Does running something from the command line get me around this issue?