Here is a quick example of how to (and not to do) what I think it is you’re after.
I’ve just used my first hit without finenessing the screen cast so apologies for the bitty nature:
http://screencast-o-matic.com/watch/cbewl26Mle
I hope that helps
Andy
[What I forgot to say is… Although I’ve recreated the steps provided by the other guys, you can explode the model and use those surfaces without it being so heavy on faces etc, unless that’s the look you were after?]
