I use
www.XonDemand.com for VOD...
VOD companies not only give you some value on your content by creating some sales but they allow you to add pay per minute billing to your existing customer billing processes...
example most studios have some sites that they sell those DVD on... just add a link to the streaming flash pay per minute... so your customers can own the DVD and order from you or watch the stream for pennies a minute...both options are needed.. the more billing options you can give your customer the more you will make at the end of the day.
more VOD TIPS...
also make sure you send over your studio logo's so you can get featured by the VOD sites and have them create more free previews around your movies to help create more sales...