My website,
www.MyspaceHerspace.com under Explore this Site and then "So you want to become an AUthor" there is some good information about the POD model of publishing.
LightningSource.com is a printer I used to publish my book, 'My Space Her Space', which is made available on Amazon, bn.com and avialble in bookstores, including Sundog books, through them and Ingram Book Group.
Another source I'd check out is one Amazon.com is beginning. It may be your best bet. It is a new deal but from what I see in looking into it, it looks like a good deal. Right off the bat, I forget the name associated with it, but I'm sure you can find out by either googling it or checking on their site. It looks like the profit margins will be better and being so closely aligned with Amazon can not be a bad thing.
Good luck with everything and remember, follow your own advice and your own dreams.