I am confused, you have the content already and need someone to make it into DVD's and handle the shipping for you ?
or you need someone with DVD's alraedy to do it for you ?
two suggestions.
1.)
www.dvdsuperstar.com takes your content and makes DVD's and handles everything involved with fullfilment.
2.)
www.mallcom.com has a great variety of stuff and will customize the links for you to go directly to the niche you want it to go to. the are great and do graphics and everything to meet yo0ur current site.
I hope one of these help you out .