The data you recovered was from a previous install on Windows and therefore has the security settings from your old user account. You need to "take ownership" of these files to reset the security settings on them for the user account that you are logged in as now.
Here's Microsoft's instructions for Windows XP:
http://support.microsoft.com/default.aspx?...p;Product=winxp
For Vista, this site has pretty good instructions:
http://www.vistax64.com/tutorials/67717-ta...rship-file.html