crystal report - how to display data from two tables

Hi all,

My question i about crystal reports.
In my ms 2008 sql database i have two tables like this :

table one
_______________________________________
driver_id           driver_name          car_id


table two
_______________________________________
car_id               car_name


When i populate datagrid in win form i get result :
Datagrid
DID          Driver name          Car
_______________________________________
1              Name 1                 Car Name 3
2              Name 2                 Car Name 1
3              Name 3                 Car Name 2

But on report result is  :

DID          Driver name          Car
_______________________________________
1              Name 1                 car_id 3
2              Name 2                 car_id 1
3              Name 3                 car_id 2
                                           (This column displays id's and i wont to show car names)

How can i display car names instead of car_id's. Tables are linked
(table_one.car_id (int) < - > table_two.car_id (int) ) in sql database and on crystal report.
Can someone please explain me how to do that on this dummy table.

Best regards,
Carlo