It's hard not to post something about that plot point in Star Trek V without spoiling the movie. I could post a relevant Youtube video about it, but it's a big spoiler for the film, so I suggest you steer clear of Youtube and web searches for ST:V until you've seen the movie.
Make sure you two watch Star Trek: Deep Space Nine before tackling Enterprise. You'll probably want to watch Star Trek: Voyager before ENT as well.
And regarding JJ Abrams Star Trek, here's a must watch Youtube video:
http://www.youtube.com/watch?v=J6XmyduTW4s