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#11
I am confused as to why it would need to run as the Administrator and David when David logs on.
I can think of several solutions to this. Here is one that may work for you. I am assuming that the Administrator Password is known by everyone so that is not an issue.
Since you already have a batch file working. Just add the batch file to the HKCU\....\Run key. Now every time David logs on it will make the SUBST for both accounts.
That will accomplish what you need.