You could use the SU command to add admin rights for the user during the login. My biggest concern with doing something like this is that you have to put a user account/password in a clear text file.

I would personally look at doing something like this from a central admin workstation using some sort of batch method. I would recommend looking into a method that Microsoft recommends with Q180546

If you find a good KiX Solution I'm sure everyone here would like to check it out!

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"He was a good little monkey and always very curious..."

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He was a good little monkey and always very curious...