So it looks like theres a new member of the venomous lizards. Scientists used MRIs and found that the Komodo Dragon does have venom glands, and uses its venom to kill its prey. This is where I found the article, in case you havent already read it.

http://news.yahoo.com/s/afp/20090519/sc_afp/scienceanimalkomodoaustralia_20090519073836