Decorating Question

I finally found my reception site. Our first choice fell through, but I found a place that I like alot better - and it has a dance floor.
Anyway, the ceiling of this place is sunken with overhead flourescents (they have softer lighting in the room so we won`t be using the overhead lights). The owner of this party room told me that people usually run Twill or whatever that sheer fabric stuff is called, over the ceiling and it looks really beautiful.

Does anyone have any suggestions on a good ceiling decoration? If I go with the twill, how do I figure out how much I need?
I also have four big poles in the room, any suggestions on what to do with them?
Thanks for any suggestions you have. I have plenty of time but I am looking for ideas and gradually picking up things I am going to be needing.