Help - for .NET newbie

I'm trying to write a routine to check if a user is an Admin from a SQL
table.
'Admin' column of the table is defined as bit (boolean) and signifies
whether
the user is admin or not.

Once I filled my dataset, I can use it to fill my grid.
If the user is admin, I want to disable some textboxes on the form for that
user.
How do I do this ? How do I get to the value of Admin and check to see if
it's true or false.
My dataset name is dataSet11.
Tablename is 'contacts'.
Column name is 'Admin' and is defined as bit type.

Can someone show me what the code may look like in C# ?
Thanks

djfd