Rendering a video

I have a problem rendering a video. When i press ANIM blender only renders the particles. not the other objects i have in the scene. But if i render a picture then it renders all of it. The codec i’m rendering with is Avi Codec Xvid MPEG 4 Codec. Has this happend to any of you before? Anyway i want advice. Please help me.
Thanks [!]

It doesn’t render the mesh? Go to the particles tab, and press ‘Mesh’, now it will show the mesh.

If you had used layers, maybe you forgot to select the other layers…

Edit: Nevermind, sorry I didn’t see you said it worked rendering a picture only.

I didn’t mean the mesh where the particles come out of i ment the other objects i have in the movie…