Hi Pete,

do you mean any document or any file including for instance a text file created with Notepad? In case of the latter, the answer would be no. Windows does not store the user that created a file. However, there's something very close to that. When you create a file and store it onto an NTFS drive, you become the owner of the file. Ownership can be changed by admins or the owner, though. Also, for administrators ownership is always the Administrators group, not the individual administrator.

Ownership can be determined with the GetOwner method of the FileSecurity object (http://msdn.microsoft.com/en-us/library/system.security.accesscontrol.filesecurity_members.aspx)