Just choose the correct composition pre-set when you go New Composition… either PAL or NTSC widescreen. An anamorphic composition will look squished on your computer monitor so you can choose one of the square pixel alternatives if you prefer.
Render it out as normal using the render queue and then import into FCP and edit onto the start of your film.
As for filling the widescreen TV, you just need to make sure it is mastered correctly. So if you are making a DVD you choose 16:9. In DVDSP I usually pick 16×9 letterbox so it will scale down on a non-widescreen TV.
Michael Duff –
Bearcage Productions, Australia
http://www.bearcage.com.au