How to add picture blueprint ?

 From:  nordzway
8404.1 
Hi all,


Im just trying to add blueprint on top plan and side plan for car modeling

im ok for add one picture but i cant place the second correctly

like this :

http://moi3d.com/forum/lmessages.php?webtag=MOI&msg=2687.1

 

Little help ?

Thank you