If you're using "Import Image" then you are just loading it in view, replacing any rendered image. When you render, it is replaced by the rendering image. If you want to load an image for insertion into the scene, you have to apply it to an object. From the Create menu, pick the man shaped icon. This will take you to a loading screen. Load your jpeg image. Now it will be on a 2d object. If it is in front of the camera, it should now show up in your render. Hope this makes sense.

This is not my "second childhood". I'm not finished with the first one yet.

Time flies like an arrow; fruit flies like a banana.

"I'd like to die peacefully in my sleep like my grandfather....not screaming in terror like the passengers on his bus." - Jack Handy