a report for different user

Hi,
Can someone tell me or give me some reference about this:
I have a report and want to by user to show different report content.
Such as Administrator can see the column of UserID and UserName,
but the general user can't.
How do I implement this function, can someone give me some reference or
advice!
Thanks!
Angihere are some options i can think of
1. what is your data source? try using the user id as a Query parameter
and get different sets of data. So, you will get different sets of data
based on the user.
2. And while rendering the report, use conditional formatting
(enabling a value or just putting a hyphen)
3. create multiple reports for different types of users; and use report
manager security to control the access to right report definition.