Blueprint Image Sizes??

Greetings. I’m a noob, and I have a question. I am modelling a car using blueprints, yeah. I have no trouble what so ever getting the images into their respective 3d views. However, it seems that the front and back views always come out different size than the side and top. I have been checking out Gaurav N. tutorial on modelling a Celica, but it does not really give any ideas on rectifying the situation. Any ideas???:confused:

You can set the Size of the Images in the View >> Background tab (to three decimals). Otherwise you can make sure they’re all the same scale in a Paint program.