Here are some methods and links about copy protecting your DVDs
http://www.cd-writer.com/cd_dvd_copy_protection.html
http://www.digital-digest.com/news-59779.html
http://www.videohelp.com/faq#copyprotectdvd
http://forums.creativecow.net/readpost/ ... &archive=T
http://dvddemystified.com/dvdfaq.html#1.11
That ought to give anyone some information but there doesn't seem to be a lot of answers yet.