Formating the system partition C maintaining all accounts

[balubeto]

HI

With a custom installation of Vista SP1, I only moved the Users directory to another partition D.

Now, having to format the system partition C, how can I create an answer file so as to warn Vista SP1 that the Users directory is already created and that it is in partition D? In other words, I wish that the installation of Vista SP1 automatically creates all "accounts" present in D:\Users\.

THANKS

BYE