PPV??? How to get a show on ppv? Myths and questions???

There's been a ton of theories and speculation presented as facts
regarding how a show gets on ppv.

If anyone really knows, perhaps you can debunk some myths and answer
some questions?

1.  I produced a show and want to air it, how do I start the process?

2.  Do they really take 50%

3.  Are blocks of time sold in hourly periods?  Quarterly?  Are
refunds given for unused time.

4.  Why would a ppv carrier refuse to air an event when they have 300
channels available, most of which are used solely to broadcast the
same old films over and over? How can a $4.95 six month old film make
any more $$$ for them over any sort of live ppv event?

5.  Do they charge more for live events over taped ones?  How so?

6.  Why do so many up and coming promotions seem to have difficulty
airing their shows on ppv, especially when I've seen everything from
toughman to tractor pulls regularly on ppv?

I'm gonna try find some google forums to post this on also.