If you're looking for an electronic Vulgate, I recommend the program at this site: http://vulsearch.sourceforge.net
It displays Latin side-by-side with an English translation (Douay-Rheims). Actually, the newest version of the program can display several different bible texts side-by-side, including the Clementine Vulgate, Stuttgart Vulgate, a French translation.
The Nova Vulgata is available at the Vatican's website.
You can find a print version of the Stuttgart Vulgate easier.
However, I couldn't find a Clementine vulgate, the one with punctuation, listed on a major bookseller's website. I bought a copy of an edition edited by Colunga & Turrado, through this site: http://www.mycatholicstore.com/
It's printed in Spain, and the maps are labeled in Spanish. I've found a few typos in it, so the text isn't infallible ;p
You can also buy books of the Nova Vulgata from the Vatican press, but they're very expensive.
Finally, I recommend Leo F. Stelten's Dictionary of Ecclesiastical Latin. It's quite affordable, and it contains many definitions found in the Vulgate, but not in Cassel's nor WORDS.