Restoring a deleted mac user

I need to delete a user account without loosing anything and then re-install it, have never done this before, need to make sure I don't lose anything.  How do I do it?  Is it possible?
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Why? What is it you are trying to do?
How best to do it will depend on exactly what you are trying to accomplish.
COHAuthor Commented:
I am having an issue with the mac user being able to log on to his computer, it is a AD on a windows server 2003 system.  We found that as long as we try to log on with a user that has not logged on previously it works.  I deleted an account and then logged back in using the deleted account name and it let me on the system.
The last link above should help.

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Mac OS X

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