After Effects and video Monitor??

I have just installed my new graphics card to a triple head Matrox Parhelia and updated my CPU in order to preview my work on Adobe After Effects. It works fine on Adobe Premiere but when I use After Effects it doesnt seem to recognise that I've got video preview hardware. In other words I cant preview anything on a TV monitor to see what it looks like. Somebody mentioned to me that I need to use a plugin programme called Echo Fire. Is there another way to resolve this??
Thanks