Unable To Access Documents Under Old User Accounts?

I was not able to restore the system back to a previous state, nor was I able to back-up my documents, so I was forced to reinstall Windows XP Professional version 2002 and all of my other applications. A new Active Directory was created, giving me new user accounts, even though I used the same user names that had been created under the old installation. Under one of the old user accounts, I had a folder that was password protected, and it contained several important documents. Since the new Active Directory does not recognize that old user folder, I can not gain access to the folder to retrieve the files, even when logged on as the administrator. I get an error message that reads: Documents and Settings My Documents is not accessible.