Stick
The nose are system in CFS3 does not exist in CFS2. In CFS2, the nose art has to be placed directly on the aircraft's texture file and can not be changed like in CFS3.
To put nose art of your choice on CFS2 planes, you first need Martin Wright's DXTbmp software to convert the extended bmp files into 24-bit Windows bmp files. Then you need some sort of paint/photo editor program...preferrably one that works with layers..and the knowledge of how to use that program.
Nose art sources are unlimited...just look around the net for images of classic nose art that you can place on your aircraft. Heck, you can put your dog's picture on the plane if you want.
OBIO