Encrypt Files: Administrator or User

Hi,
I find some questions where a user want to keep his files safe, so "Encryption" come up as an option.
I had thought that only the administrator could "encrypt" a file, but there are some sample questions that mention that the "administrator" should first set up the account for the user and then ... have the user encrypt "their own files".
I am not certain in what cases a user must encrypt their own files and when an adminstrator should encrypt the "users" files. I know this situation may come up, are there any rules or guidelines which govern this situation. Thanks
I find some questions where a user want to keep his files safe, so "Encryption" come up as an option.
I had thought that only the administrator could "encrypt" a file, but there are some sample questions that mention that the "administrator" should first set up the account for the user and then ... have the user encrypt "their own files".
I am not certain in what cases a user must encrypt their own files and when an adminstrator should encrypt the "users" files. I know this situation may come up, are there any rules or guidelines which govern this situation. Thanks
Comments
Also if an administrator resets a users password who has encrypted files then the certificates are trashed and the data is effectively lost.
Good documentation can be found at Guide: Windows XP Pro: Using File Encryption – part 1
Dale Scriven
Twitter:dscriven
Blog: vhorizon.co.uk
I appreciate your help, its clearer now, and thankyou for
those great tutorials. rick