Great Horror Scripts?

[ScriptNurse]

They use the standard screenplay format you'll find illustrated here ... http://scriptnurse.com/wcms/index.php?formatrules

[ravenskya]

Does a horror script look the same as a regular script?  I'm writing a horror zombie film, and to be honest, they rarely touch on horror in any of the screenwriting books that I've read. 

I also generally only come across shooting scripts when I'm cruising the internet - I just want to make sure that I'm doing it right - there is so little dialogue and I don't want to overdo the direction, but I need to get the point across as to what is happening.

I can't imagine "Halloween" having an extensive script prior to the shooting script, or even Friday the 13th... so little dialogue and so much violence.  How much of the nasty bloody death scenes do we spell out or leave to the director to do?

I'm I making a pest of myself yet?

[ScriptNurse]

There are many scripts that can be downloaded for FREE. Check over on the main site at http://scriptnurse.com/wcms/index.php?scripts_ko8

[M.G. McLarty]

The only script I own is Blade Runner, but I do have numerous books on scriptwriting. All of the books say to 'read scripts'.
I love horror movies, especially zombie/apocalypse ones. My favorite movie is Dawn of the Dead (2004).
So obviously I want to purchase that script.
My questions are, what other films of this genre (horror or zombie) should I buy the script of (what do you think are the best)? Where is a good place to buy scripts? Do I need to make sure it is a 'spec script' as opposed to a 'shooting script'? Is that distinction important?
Thanks for your time!