Dataset dependant on who's running the report...

I've got a parameter that I am populating from sql, but I'd like to be
able to add some functionality that does something like check for
permissions of the logged in user and use one dataset over another.
Is there anwyay I can achieve this or simulated it in any way?
Thanks in advance
Weston WeemsHi Weston
We are handling this by passing a userID as a parameter and based on
the userID passed will show or hide fields. we haven't created
different datasets, rather one large one and only display what is
necessary.
I don't know if this will help you at all.
Jennifer