3ds max NURBS

Okey i tried to make the side wing or whatever its called, of a car, so I traced it in NURBS and filled it in, but it didn't work like I wanted it to, it gave me some crappy messed up thing. How do I make it look like a side wing, so It wouldnt go out of the boundries. PLZ help i really need to know. Thanx in advance

Here are the pics.
http://files.automotiveforums.com/gallery/watermark.php?file=/503/70926perspective.jpg

http://files.automotiveforums.com/gallery/watermark.php?file=/503/70926p.jpg

ok well idont know what you did but i can give you a tutorial on how to model a car. its very good.

www.raz.ro this guy is awsome